Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on January 14, 1975.
As of Saturday, December 15th, 2018 this Executive Order has not been overturned or superceeded.

Approved Parts

Models
1975 and older, EXCEPT vehicles with Carter or Dana NOx device

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-40-1
  • Executive Order 40-1 / D40-1
  • ARB # D-40-1
  • Executive Order No: D-40-1
  • C.A.R.B. No. D-40-1
  • Resolution D-40-1
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-40-1 PDF

D-40-1 Document:



                         State of California
                         AIR RESOURCES BOARD

                        EXECUTIVE ORDER D—40—1   .
            Relating to Exemptions under Section 27156
                        of the Vehicle Code

                   AUTOTRONTE CONTROLS CORPORATION
                               "MSD—2"

Pursuant to the authority vested in the Air Resou}ces Board
by Section 27156 of the Vehicle Code; and

Pursuant to the authority vested in the undersigned by Section
39023 of the Health and Safety Code;

IT IS ORDERED AND RESOLVED:   That the installation of "MSD—2"
electronic capacitive discharge ignition system manufactured
by Autotronic Controls Corporation, has been found to not reduce
the effectiveness of required motor vehicle pollution control
devices and, therefore, is exempt from the prohibitions of
Section 27156 of the Vehicle Code for 1975 and older model—year
vehicles with the standard 12—volt, negative ground Kettering
system with either breaker points or breakerless switching.
The following are specifically excepted:

Any vehicles equipped with an.emission control system utilizing
an electronic speed sensor such as the Dana Retronox system or
the Carter CER system.

The device consists of a DC—to—DC converter circuit, a storage
capacitor, an electronic timing circuit, and an electronic switch.

This Executive Order is valid provided that installation instructions
for this device will not recommend tuning the vehicle to specifica—
tions different than those listed by the vehicle manufacturer.

Changes made to the design or operating conditions of the device
as originally submitted to the Air Resources Board for evaluation
that adversely affect the performance of the vehicle‘s pollution
control devices shall invalidate this Executive Order.

Marketing of this device using an identification other than that
shown in this Executive Order or marketing of this device for an
application other than those listed in this Executive Order shall
be prohibited unless prior approval is obtained from the Air
Resources Board.   _


"MSD—2"               —     a                            EXECUTIVE ORDER D—40—1


This Executive Order does not constitute any opinion as to the effect that
the use of. this device may have on any warranty either expressed or
implfed by the vehicle manufacturer.

THIS EXECUTIVE ORDER DOES NOT CONSTITUTE A CERTIFICATION, ACCREDITATION,
APPROVAL, OR ANY OTHER TYPE OF ENDORSEMENT BY THE AIR RESOURCES BOARD
OF ANY CLAIMS OF THE APPLICANT CONCERNING ANTI—POLLUTION BENEFITS OR ANY
ALLEGED BENEFITS OF THE "MSD—2" DEVICE.

No claim of any kind, such as "Approved by Air Resources Board" may be
made with respect to the action taken herein in any advertising or other
oral or written communication.

Section 17500 of the Business and Professions Code makes unlawful, untrue
or misleading advertising and Section 17534 makes violation punishable as
a misdemeanor.

Sections 39130 and 39184 of the Health and Safefy Code provide as follows:

     "39130.   No person shall install, sell, offer for sale, or advertise
     or, except in an application to the board for certification of a
     device, represent, any device as a motor vehicle pollution control
     device unless that device has been certified by the board. No
     person shall sell, offer for sale, advertise, or represent any motor.
     vehicle poliution control device as a certified device which, in
     fact, is not a certified device.     Any violation of this section is
     a misdemeanor."

     "39184.   (A) No person shall install.:sell, offer for sale, or
     advertise, or, except in an application to the board for
     accreditation of a device, represent, any device as a motor vehicle
     pollution control device for use on any used motor vehicle unless
     that device has been accredited by the board.      No person shall sell,
     offer for sale, advertise, or represent any motor vehicle poliution
     control device as an accredited device which, in fact, is not an
     accredited device.     Any violation of this subdivision is a mis—
     demeanor."                                                >

Any apparent violation of the conditions of this Executive Ordef will
be submitted to the Attorney Gereral of California for such action as
he deems advisable.

Executive Order D—40, dated October 3, 1974, is superceded and of no
further force and effect.


Executed at Sacramento, California, this     4fif   day of January, 1975.



                                           WILLIAM SIMMONS
                                           Executive Officer


                         State of California
                         AIR RESOURCES BOARD

                           January 8, 1975

                            Staff— Report


         Evaluation of Autotronic Controls Corporation‘s
       Application for an Exemption from the Prohibitions
          of Vehicle Code Section 27156 for the "MSO—2"
         Capacitive Discharge Ignition System for Vehicles
            Equipped with Breakerless Ignition Systems


     Introduction

    Autotronics Controls Corporation, 6908 Commerce, El Paso,

   . Texas 79915, has requested an exemption from the prohibitions

     of Vehicle Code §eétion 27156 for its "MSD—2" capacitive

     discharge ignition system.   They have previously been granted

     an exemption (E. 0. D—40, 10/3/74) for i974 and older model—

    year vehicles with a 12—volt, standard Kettering ignition

     éystem.   Yehicles originally eduipped with electronic ignition

     systems {breakerless, capacitive discha%ge , Or transistorized)

     or 1966770 vehicles retrofitted with Dana or Carter speed sensors

    were specifically excepted.    They are now requesting an exemption

     for their "MSD—2" device for installation on vehicles with breakerless

     ignition systems.


II. ~ Device Description and Function

    The "MSD—2" is a capacitive discharge type ignition with circuitry

     that allows repeated firings of spark plug after the initial

     firing in order to extend the time available for ignition.     The


        circuit description and function are described in detail                 .

        in the Staff report of September 27, 1974, "Evaluation of Autotronic

        Controls Corporation‘s Application for an Exemption from the

        Prohibitions of Vehicle Code Section 27156 for the "MSD—2"

        Capacitive Discharge Ignition System".


111.    Device Evaluation

        The applicant did not submit any emission test data showing the

        effects of the device on the OEM emission control system.       iIn

        order to evaluate the device, the electrical output characteristics

        of a Chrysler and a Ford breakerless ignition system with and

        without the "MSD—2" device installed were compared.     The tests were

        conducted on the Air Resources Board‘s ignition system simulator

        which consists of a Sun distributor tester, Tektronix oscilloscope,

        Sun ignition analyzer, and associated auxiliaries.    Tbe ARB

        evaluation consisted of measuring the spark advance, spark duration,

       ~avai1ab1e'secondary voltage, and secondary voltage rise time.


        The results of this test showed that the installation of the "MSO—2"

        device significantly changed the output characteristics of the OEM

        ignition system.    Centrifugal spark advance timing was‘increased

        one to three degrees from OEM and both the spark duration and

        available secondary voltage were significantly reduced.     These

        reductions would greatly increase the chance of misfire under

        conditions of high speed and high load..   Ignition misfire would

        cause significant increases in hydrocarbon emissions.


       In order to evaluate the effect of thesé changes on a vehicle‘s

       emissions, a series of 3 hot—<start CVS—1 and 55—mph steady—state,.

       road load tests were run with the device installed and in the

       baseline condition.   Emissions of hydrocarbons (HC), carbon monoxide

       (C0)., oxides of nitrogen (NOx), carbon dioxide, and calculated fuel

       economy in miles per gallon (MPG) were recorded for all tests as well

       as repegting the tests of spark advafice, spark duration, secondary

       voltage rise time, and available secondary voltage on the vehicle.

       The results from these teéts are shown in Table II.


   . A 1974 Ford LTD, 400 CID, 2—bb1. carburetor, automatic transmission,

       with air injection and exhaust gas recirculation emission controls
       was provided by the applicant, with the staff‘s concurrence, to

       determine the device‘s effect on a vehcle..

                                Table II

      — Centrifugal Spark Advance in Crankshaft Degrees from TDC

rom                              Baseline                          Device

 750                               12                                 12
1000                               13                                13
1500                               18.5                               18
2000                               22                                 22
2500                               25                                  25
3000                               29                   >              28

                    Spark Duration in Microseconds

                                                                   Number
gpm                 Baseline                   Device              of Pulses

 750                  1700                      1200                   6
1200                  1400                       800                   4
2000                 1300                        400                   2
3000                  1100              —        400                   2


                 Secondary Voltage Rise Time in Microseconds

RPM                                 Baseline                             Device
2000 _                              40                                     8
Available Secondary Voltage in Kilovo]ts @ 55—MPH Road Load Cruise

                   Baseline                     _        Device

                    27                                   27
                         CVS~1 Hot Start Emissions (gm/mi)
Test Condition                HC         co                   NOx      Fuel Economy (MPG)

Average Baseline             Cl
3—tests                     1.217      25.596              1.671               11.203

Average Device '
3—tests                     1.124      27.463       +.     1.694               10.792

Percent Change
from Baseline              —7.6%         7.3%             +1.4%                —3.7%

       bata from the 55—MPH steady—state emissions test was fnconclusive

       due to excessive variability of the emissions.               The resulits of the

       Hot Start CVS—1 Qere statistically analyzed and no difference between

       the baseline and the device results were found at the 80% confidence

       1eve1‘or higher.>       Thus, the data shows no significant increases in

       emissions.


       The applicant included installation instructiofis {Exhibit I) for

       the "MSD—2" device on vehicles originally equipped with Delco‘s

      ~ HEI Electronic Unitized Ignition System; the other systems‘

       installation is identical to that of the stanfard Kettering

       system.     By following the applicant‘s revised instructions

       for installation of the "MSD—2" device on the Delco HEI system


       the OEM system‘s cofinecting plugs are no'longer directly connected

       to each othér.   Instead,'they are connected by a "jumper" connection

       between the common coil frame ground connection.   This installation

       leaves the HEI plugs dangling and no longer constrained.   This

       installation does not maintain the sealed interconnection of the OEM

       system.   The coil frame, however, is grounded by the "jumper" and

      . the staff has no knowledge of adverse emission effects caused by the

       failure of this ground.


IV.     Conclusions and Recommendations

      . It is the opinion of the staff that the "MSD—2" device does not

        reduce the effectiveness of required emission control systems.


      ~ Therefore, it is recommended that Autotronic Controls Corp—

       oration be granted an exemption from the prohibitions of Vehicle

        Code Section 27156 for its "MSD—2" capacitive discharge fgnition

       ‘device to be used with 1975 and older model—year vehicles equipped

       with a 12—volt, standard Kettering ignition system but utilizing

       éome electronic system to replace the breaker points.


                                                 EXHIBIT—I

         Installation of the NMSD— 2
                                                                     anm                    e
                                                      on Cl                cars     using the
                                                      HEI unitized electronic                                        >
                                                                                        0                  0
                                                                                        i1gnilion.




                                                                                                     l8
                                                                                        a   A mm ~


                                      / .      The new General Mofors HEl ignition system is
                                       totally contained in the distributor housing. All of the
                                               connections are made with a pair of connectors on the
                                               side of thedistributor as shown in the sketch at the left.
                                               They make installation of the MSD—2 very easy . Adding
                                               the MULTI—FIRING of the MSD—2 to the breakerless
                                               HEL really makes good sense .
                                                       This installation requires the special MSD—2
                                                  cable and a short jumper wire as supplied in the
                                                      MSD—HEl kit. Follow the regular instructions,
                                                                         except for the cable hook—up.
                                                                                     Follow those at the
                                                                                        left below for
                                                                                     | installation of

     1. Separate the connectors as in the
        detail on the right. They are keyed
        so you can‘t insert them into the 5
        distributor wrong, but if you twist
        them, they won‘t match the drawing .
    2.. Start by connecting the GND wire.
       Its receptacle slips onto the tab
       marked C—.                                                                                   TACH terminal
    3. Next install the COIL +                                                                       not shown .
       wire : Its receptacle slips
       onto the tab marked B+.
    4. Now, attach the receptacle
       end of the jumper wire to
       the tab marked GRD .
    5. Insert the tab end of the
       jumper wire into the center
       receptacle of the distributor
                                                                                                DISTRIBUTOR
        connector.
                                                                                                    Connector
     6. Notice that the +12y wire
        has two tabs . Insert a tab
        into the right side                                                                          KEY
        receptacle of both                            ,'v    i             C                         ‘          t

.       the distributor               ts        Vap o                                                    Connector
        and key connectors!           >     wl m            uq   .
                                            CL         pag                                      §
‘ 7. The  PIS tabs
     has two                a tab ( ols M
                     Inserth\m/\’
              wire. also                Her
     into the left side receptacle
     both the distributor and key                                               &       Sss To Key Switch
        connectors.


                    State of California
                    AIR RESOURCES BOARD

                    September 27, 1974

                       Staff Report

         Evaluation of Autotronic Controls
           Corporation‘s Application for an
  .Exemption from the Prohibitions of Vehicle Code
 Section 27156 for the "MSD—2" Capacitive Discharge
                  Ignition System


1.   Introduction

     Autotronic     Controls Corporation, El Paso, Texas, has

     requested a finding relative to the requirements of

     ¥ehicle Code Section 27156 for its "MSD—2"      capacitive

     discharase ionition system.      Autotronic Controls Cor—

     poration intends to market this device for use with 1974

     and older model—year vehicles with 12 volit negative

     ground.
                                                                  2

     "The Air Resources Board Criteria for Determining Compliance

     with Section 27156 of the Vehicle Code" was used to eyaluyate
     the device.


T1   Device Description and Function

     The "MSD—2" device is a capacitive discharge ignition system

     connected to the OEM coiland distributor,.       The device con—

     sists of a DC—to—DC converter circuit, a storage capacitor,

     an electronic switch and an electronic timing circuit.           See


"MSp.2"




    Appendix A for the circuit diagram.     The installation

    instructions and:—engine setting revisions are in Appendix B.

    In operation,. the converter circuit is in series with

    the battery and ignition switch.     The battery voltage,

    12 volts DC, is converted by this circuit to 350 volts

    DC and stored in a tank cépacitor.     The 350 volts are

    available on demand for exciting the coil of the OEM

    ianition. system,


    When the points open, the electronic timing function becomes

    operative for a definite period of time unless mechanically

    ’interrupted by the distributor,    During this period of

    operation, the timing circuit will turn the electronic
    switch (SCR) on and off at fixed intervals.      Each time the

    SCR is turned on the 350 volts in the storage capacitor

    are discharged into the primary of the ignition coil with

    the resultant spark occuring at the spark plug.      These

    voltage discharges or pulses for each engine firing will

    vary in number with engine speed.     More pulses will occur

    at the lower engine speeds.    See Figure 1   for typical spark

    lines of the OEM and "MSD—2" devices,


    The concept of multiple sparks is to extend the spark

    duration by producing a number of shorter duration sparks.

    The total   time to fire the cylinder is then the sum of the


    shorter duration sbarks,.    The advantage claimed for

    this concept is that if the air/fuel mixture is too

    Tean to fire on the first spark, a richer air/fuel

   mikture will   shortly be swept by the spark plug and be

    firéd by a suceeding spark.


II1. Evaluation Tests

    A.   Applicant Tests

         The applicant submitted emission data of tests      per—

         formed at the Edelbrock Emission Laboratory.     Base—

         line and device tests were performed on a 1973 Chevrolet

         Neova, 350 CID, aufomatic transmission,.   These tests

         were performed to determine emission trends produced

         by the device with an unacceptable test procedure

         followed during the tests.   Therefore, the submitted

         data is considered inconclusive.


         ARB_ Laboratory Tests                                      *

         A 1974 Ambassador, 360 CID, 4—bb1   carburetor, AIR

         emission control system and automatic transmission

         was selected to determine the device‘s electronic

         characteristics and effects on emissifons.


        The following is a comparison of the baseline and

        device electronic characteristics;


                   Centrifuaal Snark Advance

                                 Standard Ignition         MSD—2 Device
        Engine Soeed RPM         Crankshaft Dearees        Crankshaft Degrets

              750 (Id¢le)                  6                      6

             1000                        14                      14

             1500                        18                      18

             2000     _                  20                      20

             2500                        22                      23

             3000                        26                      27


                          Spark Duration

                           Standard Ianition               MSB—2 Device
Engine Speed — RPM         Microseconds {(us )      No. Sparks  us/Spark         Tot. us

       750 (Idle)                 1700                 7                   643     4500

      2000    _                   1400                 3                   567     1700


                  Secondary Yoltage Rise Time

                                  Standard Ignition           MSD=—2 Device
    Engine Speed RPM                Microseconds              Microseconds

         750 (Idle)                            10                     10


                      Secondary Voltace

                                 Standard Ianition           MSD—2 Device
   Engine Speed RPM                  Volts                       Yolts

        750 (Id1le)                  30,000                     32,000

      2200                           26,000                     31,000


fhe "MSD»—2" device exhibited electrical characteristics

for spark advance and yvoltage rise time similar to the

OEM ifjanition system,.   Typical   for capacitive discharge

ignition systems, the device also provides gréater

available voltage at the higher engine speeds in com—

parison to the OEM system.


fhe multiple spark feature of the "MSD" device is

apparent when comparing the device and OEM spark duration

data.   The OEM system generates a single spark of a

duration dependent upon engine speed afid secondary

ignition system.     The "MSD—2" device produces a series

of sparks for each cylinder firing.       ‘The duration of each

spark is less than the OEM duration while the duration

of the sum of the series of sparks is greater than the

OEM duration.


The duration of the spark is an important factor in

controlling lean misfires.,     An increase in hydrocarbon

emissions will occur with lean misfires,        To determine

if this effect exists with the "MSD—2" device, 50 mph

steady state emission tests were performed on the 1974

American Motors vehicle,.     The following are the results
of these tests:


                   50 MPH Steady State Test


                                Grams/Mile

                         HC          £8.         NOx
     Baseline           0. 91        3,96         2.72

     Device             0.93         4 .02        2.67
     Percent            2.2          1.5         ~1.8
      Change

     No significant increases in emissions were noted in these tests.


pv   Conclusions and Recommendations

     It is the opinion of the staff that the "MSD—2" device does
     not reduce the effectiveness of required emission control

     sys tems .


     Therefore, it is recommended that Autotronic Controls

     Corporation be granted an exemption from the prohibitions

     of Vehicle Code Section 27156 for its "MSD.—2" capacitive

     discharoe ignition device to be used with 1974 and older

     model«year vehicles except the following:

       1,   All vehicles equipped with an electronic fjanition

            sys tem,.                        .

       2. All     1966—70 model—year vehicles equipped with a

            Dana or Carter NOx retrofit device using an

            electronic speed sensor.


                              Figure 1

                 Compérison   df Cofl Secondary
                  Output Yoltaces of a Typical
             OEYM Ianition System and the "MSD—2" Device




Yolts
           Spark
          Duration

                                                                  Points
                                                           ©      Open
                                                  Points Closed
Zero                                                     .




          Total‘Spark
Volts &——— Duration ——__—_                  MSD=—2



                                                                  Points
                                                             .    Open
                                                                       }




                                                     uw
Zero                                         Points Closed         r
Line


                                                 AFFENLUIA   5   Qrjp   o           ywy




      BY CAREFULLY FOLLOWING THESE BRIEF STEPS, YOU WILL ASSURE             j             h
A CORRECT, RELIABLE INSTALLATION . SHORT—CUTS WILL PROBASLY COST                .         \
YOU TIME AND EVEN IF THE ENGINE DOFS RUN, YOU MIGHT NOT GET ALL
OF THE BENEFITS THAT THE MSD IGNITION SYSTEM CAN PROVIDE. READ
COMPLETELY THROUGH THESE INSTRUCTIONS BEFORE YOU START. CHECK
EACH CIRCLE AS YOU COMPLETE THAT STEP.


                                                                          APPENDIX B (2) of (5)




@© O sz mount tmemso ienimon un
                   Good places ure flat surfaces on the firewall, the engine side of the
                   wheel well cover, and beside the radiator, Use the case as a template
                   for locating the holes. Fasten the unit securely with bofts or sheet metal
                   screws. This must be a firm connection because it supplies ground to the
                   circuit. If the unit is mounted on a plastic body part (NOT ADVISED},
                   you MUST add a ground wire of 10 gauge or larger:.               '
                   DO NOT INSTALL in front of the radiator or near the exhaustsystem
                   or the radfo antenna .
  — OQstEp—2   LOCATE THE COIL
      -------BE CERTAIN THAT THE IGNITION SWITCH IS OFF. it is always a good
                   idea when working on a car‘s electrical system to disconnect the positive
                   lead of the battery for added safety .
   O stEp—3    DISCONNECT ALL LEADS FROM THE NEGATIVE (—) COIL STUD.
      ------- NOTE: On some coils the negative stud is marked PTS, and the positive stud
                      is marked BATT.
   OSTEP-;     PLACE THE INSULATOR BLOCK WITH THE PTS.(Yellow Slteeve) CABLEv
                   TERMINALON THE NEGATIVE (—) COIL STUD.
@© Ose—s       PLACE THE WIRE TERMINAL MARKED GND. ,
                   (White Sleeve) OVER THE NEGATIVE
                   COIL $STUD ON TOP OF THE INSULA—
                   TOR BLOCK. Secure with a nut and
                   lock washer. TIGHTEN.
   OstEp—s     PLACE THE WIRE TERMINAL THAT DID GO
                  _TO THE NEGATIVE COIL STUD (Make




                                                                                                  are es csttee
                   certain that this wire goes to either the
                   distributor (points) or to the stock
                   factory electronic ignition unit.) ON
                   THE SAME BOLT THAT THE PTS. WIRE
                   (Yellow Sleeve) 15 ATTACHED 1O .
                   Secure with a lock washer and nut.
                   TIGHTEN,
               REMOVE THE TERMINALS, NUTS, WASHERS, CONDENSER, ETC.
                  FROM THE POSIHTIVE (+) COIL STUD.
               PLACE THE INSULATOR BLOCK WiTH THE +12v.(Red Sleeve) TERMINAL
                   ON THE POSITIVE COIL STUD.
                                           — Q en


                                                                                  APPENDIX B (3) ot \=/




. Os:'E°-9 PLACE THE WIRE TERMINAL MARKED COIL (Blue Sleeve) OVER THE
                      POSITIVE COIL STUD ON TOP OF THE INSULATOR BLOCK. Secure
                     with a lock washer and nut. TIGHTEN.

    OSTEP-]O PLACE ALL THE WIRE TERMINALS THAT DID GO TO THE POSITIVE COIL
                 STUD ON THE BOLT WITH THE CABLE TERMINAL MARKED +12v.
                 (Red Sleeve). ALSO BE SURE THAT THE TERMINAL ATTACHED 16
                 THE SINGLE WIRE 1S ON THIS BOLT. Secure with a lock washer and
                 a nut. TIGHTEN.
     OSTEP-H BY—PASS THE BALLAST RESISTOR. ——— THE SINGLE WIRE THAT WAS
                 JUST ATTACHED TO THE +12v. BOLT MUST BE CONNECTED TO
                 THE KEY SWITCH SIDE OFTHE BALLAST RESISTOR. SOME CARS,
                 NOTABLY GM, DO NOT HAVE A BALLAST RESISTOR, BUT INSTEAD,
                 HAVE A RESISTANCE WIRE FROM THE COIL TO NEAR THE KEY
                 SWITCH. THE SINGLE WIRE MUST BE ATTACHED AT THIS POINT,
               Switohec                  G(ARvolts. Ayallable at Thaose Looations




                                                                                                       nnscnsmcmmmmammerenmime hancns
                  Splice. Hereoy                   S plice Hc\-z_-s\

             care. [            B                            y
               n _             8                                 M            1
                               ‘1
                                                             BALLAST        MI
                                               (%                      Cen        >
                                                                             /d/‘i\///       \
                                                   corn      >          .
               y
             ANTI—DIESEL SotEMoip/             .                                    L
                                     >                                                  Splice Here.



                     OR ON MANY LATER MODEL CARS, IT—CAN B5 SPLICED TO THE
                     WIRE GOING TO THE ANTI—DIESELING SOLENGCID ON TH
                     CARBURETOR, THE RECOMMENDED METHOD OF SPLICING IS THE
                     USE OF AN ETC Co. Vibrakrimp TAP SPLICE OR A 3M Co. Seotchlok.
                     SEE THE SKETCH ON PAGE 4. In an emergency, the wire can be
                     carefully stripped (DO NOT NICK THE WIRE), the end.of the single
                     wire wrapped around the first wire, and the connection carefully
                     soldered with ROSIN CORE solder. Carefully wrap the ss]xce with
                     electrical tape .
    (O STEP—12 RECHECK ALL CONNECTIONS. You must instal] the system correctly to
                     get the full benefit of MSD and to protect your WARRANTY.
&   O STEP—13 SPRAY THE COIL AREA (all terminals and top of the coil) WITH A SILICONE
N                 1GNITION SPRAY. THIS HELPS TO WATERPROOF THE INSTALLATION.
    O STEP—14 START THE ENGINE, Reconnect the battery .
                                                        ua 2 w


                                                                                    APPENDIX B (4) ot                      (5)




     .          NOTE: On some cars the power that the
                     alternator supplies to the charging
                      light is sufficient to operate the MSD
                      Ignition. This means that the engine                                           Brode
                       will not stop when the key is turned                    4 Amg 100 +v.
                       off. (STOP by sulling high tension                /{/ o
                       wire out of coll or shorting PTS.              e,   &V/\Q
                       terminal to GND . terminal oncoil.)         O,(;,fi\\\
                                                                           a,*         '}$




                                                                                      \
                       The drawingon
                                   the right shows how             '\L//V\“““‘
                                                                            PJa “
                                                                                s fi:':‘:"i:;:_i
                       to install the diode to prevent this.                   C Revelinse
                                                                            r:gu\n'rm—
                                                                            (Sometimes     Sez velusls                     |
                       The Ford part shown will work on                 72 ve »ivewentieey SE CET
                       most cars. YOU must be sure that        _      / amp
                       this is the problem. The engine can
                       also continue to run if you have made a mistake in wiring. Check it again
                       before installing the diode .
                FOR EVEN BETTER OPERATION: The MSD Ignition System is not tempermental, it
                      will give smooth engine operation even under adverse conditions. However,
                      there are some things that you can do to help. All of your plugs, high tension
                       wires, distributor rotor and cap, and poinfs must be in good        .__._
                                                                                                    iemg Methods
                       condition to get the full benefit of ?he MSD . Clean the top E-;            ETC Vibrakrimp. |
                       of the coil before you install the system and clean the        M2       Tap SpHter         *
 .                     inside of the distributor cap while inspecting it. Than spray       G‘)fl +
                       fhe inside of the cap with silicone spray . The«timing—setiing. /?é
     . Revised per— aspectal y ipurtimt o The MHP® wiH wwork «witlr mest—of—«the | /,:;“f_ffi"{;‘
      attached ACC b:;’T30333 lishts, .Souawith the factermsettineow                >
      letter dated anticipare shatyoucan advange the timing several_esgrees ||"\___                            _
      9/18/74          g“»’?i"\g tyam berternmilzage.s Yeu €dM €N30—MCREIEE: di1G. i                N‘\///[/’/’
                       span" plugguprorue mrhras"00654 for—irstrormeitecpe—yiot . |
                       Non=sprigror epark progey hotise Hy round ced amicne» aad | %nt
                                                                                     pwe
                       domerimes toldor phigs with maxitrze MoPr performane® .
                ELECTRONIC TACKOMETER QPEBATION: Some electronic fach
                      installations may have to be modified for proper opeiation .       ~
                      Contact factory for information and include self—addressed,   /51.     on
                      stamped envelope. State car model and tach model .           3  insaltien ahraind
                IN CASE OF FAILURE: No matter how thoroughly an efectronic                 53.#?31.\: ;9’5
                       instrument is tested, a failure will sometimes occur. Your                        éfif\;)
b.                    warranty will help, but you also need to operate your car.                         :             .
 A                    To disable the MSD Ignition, simply reverse Steps 11 thru                                        j
                      3 to reconnect the standard ignition system.

                                                     mt_{],m


                                                                                   Uitrasonis
                                                                                   Adapiive C

C%—   AUTOTRONIC CcomTROLS comnporation                                            Preerwon M
      69808 COMMERCE, EL PASO, TEXAS 79915            —>    (8158) 772—7431




      C                                       —    September 18, 1974
                                                  Ref. No. 5—517



             Mr. Joseph Calhoun
             Chief of Motor Vehicle Testing
             Air Resources—Laboratory
             9528 Telstar Ave.
             El Monte, CA   91731

             Dear Mr. Calhoun:

             In reference to the Multiple Spark Discharge (MSD) Ignition System,
             MSD—2 of Autotronic Controls Corporation currently being tested   _
             for approval by your agency, I am enclosing a revised copy of the
             "Installation Manual" together with a copy of the old instructions.

             On Page 4 of the manual the hints under "For Even Better Operation"
             concerning the advancing of the ignition timing beyond the manu—
             facturer‘s specifications has been deleted.  The revised vérsion
‘            recommends "factory specified settings" and a caution that in some
             states it is mandatory.

             All future printings of the Installation Manual will contain this
             revision on ignition timing.  Any MSD—2 units shipped into
             California subsequent to approval by the Air Resources Board will
             carry the revised ignition timing recommendation.

             Please contact our agent, Robert Lockhart, or Jack Priegel or
             myself if futher action or information is required.

                                                  Sincerely yours,


                                                    }é§i224*£5222%2§f§;1—-~
                                                  J. Frank Casey
                                                  Marketing Manager

             JrC/pf
            ‘ee:      . Dick Kinney
                    r. Bob Weis
                   Air ReésoarcesLaboratory
                   9528 Telstar Avenue
                   El Monte, CA     91731

.            Enclosure




                         %‘f            CREATIVE ENVIRCNMENTAL TECHNGLOGY



Document Created: 2005-09-01 12:44:17
Document Modified: 2005-09-01 12:44:17

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