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INSTALLATION INSTRUCTIONS

M S D

• W W W . M S D P E R F O R M A N C E . C O M • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4

If your tachometer does not operate correctly or if you experience a no-run situation with your

foreign vehicle you probably need an MSD Tach Adapter. The chart below lists common tachometers

and if an Adapter is necessary.

INOPERATIVE TACHOMETERS

I f

your tachometer fails to operate with the MSD installed you may need an MSD Tach Adapter. Before

getting an Adapter, try connecting your tachometer trigger wire to the tach output terminal on the

side of the MSD. This output produces a 12 volt, square wave (see page 2). If the tach still does not

operate, you will need a Tach Adapter. There are two Tach Adapters:

PN 8920:

If you are using the Magnetic Pickup connector (Green and Violet wires) to trigger the

MSD, you will need the PN 8920.

PN 8910:

If your tachometer was triggered from the coil negative terminal (voltage trigger) and you

are using the White wire to trigger the MSD you will need the PN 8910.

ENGINE RUN-ON

If your engine continues to run even when the ignition is turned Off you are experiencing engine Run-

On. This usually only occurs on older vehicles with an external voltage regulator. Because the MSD

receives power directly from the battery, it does not require much current to keep the unit energized.

If you are experiencing run-on, it is due to a small amount of voltage going through the charging lamp

indicator and feeding the small Red wire even if the key is turned off.

Early Ford and GM:

To solve the Run-On problem, a Diode is supplied with the MSD in the parts

bag. By installing this Diode in-line of the wire that goes to the Charging indicator, the voltage is kept

from entering the MSD. Figure 5 shows the proper installation for early Ford and GM vehicles.

Note

: Diodes are used to allow voltage to flow only one way. Make sure the Diode is installed

facing the proper direction (as shown in Figure 5).

Ford:

Install the Diode inline to the wire going to the “1” terminal.

Tachometer Compatibility List

AFTERMARKET TACHOMETER

WHITE WIRE TRIGGER

MAGNETIC TRIGGER CONNECTOR

AUTOGAGE

8910

8920

AUTOMETER

NONE

FORD MOTORSPORTS

NONE

MALLORY

NONE

MOROSO

NONE

STEWART

8910

8920

S.W. & BI TORX

NONE

SUN

8910

8920

VDO

8910

8920

AMC (JEEP)

8910

8920

CHRYSLER

8910

8920

FORD (Before 1976)

8910

8920

FORD (After 1976)

8910

8920

GENERAL MOTORS

Bypass In-Line Filter

Bypass In-line filter

IMPORTS

8910

8920

Note:

On the list above, the trigger wire on tachometers that are marked NONE may be connected to the

Tach Output Terminal on the MSD 7 Series Ignition Unit using the supplied Female Faston Receptacle.

Содержание 7222

Страница 1: ...n is set for 8 cylinder operation To program the unit for other engines remove the one screw that holds the cover to reveal three wire loops Figure 1 Cutting a wire loop determines the cylinder selection SPARK LED When the coil fires current is sensed and this LED will flash This confirms that the ignition has received a trigger signal and that the coil and ignition are working properly If the coi...

Страница 2: ...y tachometers may require a Tach Adapter to operate with the MSD For more information on Tachometers and MSD Tach Adapters see the Tachometer Section on page 6 If your GM vehicle has an inline filter it may cause the tach to drop to zero on acceleration If this occurs bypass the filter SPARK PLUGS AND WIRES Spark plug wires are very important to the operation of your ignition system A good quality...

Страница 3: ...tall a new distributor cap and rotor when installing the MSD Ignition Control The cap should be clean inside and out especially the terminals and rotor tip On vehicles with smaller caps it is possible for the air inside the cap to become electrically charged causing crossfire which can result in misfire This can be prevented by drilling a couple vent holes in the cap The holes should be placed bet...

Страница 4: ... to the positive terminal of the coil This is the only wire that makes electrical contact with the coil positive terminal COIL BLACK Connects to the negative terminal of the coil This is the only wire that makes electrical contact with the coil negative terminal COIL HEAVY BLACK This wire connects to a good ground either at the battery negative terminal or to the engine BAT HEAVY RED BAT TACH TACH...

Страница 5: ...quipment to the terminals PRESTART CHECK LIST The only wires connected to the coil terminals are the MSD Orange to coil positive and Black to coil negative The small Red wire of the MSD is connected to a switched 12 volt source The MSD power leads are connected directly to the battery positive and negative terminals The battery is connected and fully charged if not using an alternator The engine i...

Страница 6: ...use the MSD receives power directly from the battery it does not require much current to keep the unit energized If you are experiencing run on it is due to a small amount of voltage going through the charging lamp indicator and feeding the small Red wire even if the key is turned off Early Ford and GM To solve the Run On problem a Diode is supplied with the MSD in the parts bag By installing this...

Страница 7: ...ry high voltage will be present and no test equipment should be connected Make sure that the battery is fully charged and the connections are clean and tight If you are not running an alternator this is an imperative check If the battery voltage falls below 10 volts during a race the MSD output voltage will drop WARNING Do not touch the coil terminals during cranking or while the engine is running...

Страница 8: ... Green and Violet magnetic pickup wires together Each time you break this ground rapidly a spark should jump from the coil wire to ground If spark is present the ignition is working properly If there is no spark skip to step 6 below 6 If there is no spark A Inspect all of the wiring B Substitute another coil and repeat the test If there is now spark the coil is at fault C If there is still no spar...

Страница 9: ...C E C O M 9 1 5 8 5 7 5 2 0 0 F A X 9 1 5 8 5 7 3 3 4 4 MSD SYSTEMS Installing to Points Amplifier Style Ignition On dual point setups it is recommended to remove the trailing set of points NOTE MSD SYSTEMS Installing to an MSD Distributor Crank Trigger TO 12 VOLTS ...

Страница 10: ...LLATION INSTRUCTIONS M S D W W W M S D P E R F O R M A N C E C O M 9 1 5 8 5 7 5 2 0 0 F A X 9 1 5 8 5 7 3 3 4 4 MSD SYSTEMS Installing to an MSD Ready to Run Distributor MSD SYSTEMS With an MSD Timing Control ...

Страница 11: ... 5 7 5 2 0 0 F A X 9 1 5 8 5 7 3 3 4 4 GM IGNITIONS Wiring with an MSD to GM Wiring Harness Harness PN 8876 Dual Connector Coil Harness PN 8877 1996 on GM Vehicles FORD IGNITIONS Wiring a Ford TFI with Harness PN 8874 NOTE Installation of a Timing Control with the Harness see page 12 ...

Страница 12: ... of the following diagrams fit your specific application remove the distributor cap and rotor and locate the ignition module at the base of the distributor Count the number of terminals on both ends of the module and follow the corresponding diagram GM used 4 5 and 7 pin modules in these distributors NOTE Some 5 pin models may experience a hesitation or stall on deceleration If this occurs contact...

Страница 13: ...esis tance Bushing PN 8412 The GM Ignition Module is removed and replaced with the MSD PN 8861 Wire Harness GM IGNITIONS Wiring an HEI 5 or 7 pin Module Amplifier Trigger NOTE NOTE The stock rotor button must be replaced with an MSD Low Resistance Bushing PN 8412 Some 5 pin models may experience a hesitation or stall on decelera tion If this occurs contact MSD Tech Line for the required bolt in di...

Страница 14: ... E R F O R M A N C E C O M 9 1 5 8 5 7 5 2 0 0 F A X 9 1 5 8 5 7 3 3 4 4 FORD IGNITIONS Wiring a Ford DuraSpark using Magnetic Pickup Trigger HONDA IGNITIONS Wiring a Honda with Internal Coil NOTE When used with 4 cyl Honda cut 2 loops on Cyl Select ...

Страница 15: ...D P E R F O R M A N C E C O M 9 1 5 8 5 7 5 2 0 0 F A X 9 1 5 8 5 7 3 3 4 4 CHRYSLER IGNITIONS Wiring a Chrysler Electronic Ignition using Magnetic Pickup Trigger AFTERMARKET COMPONENTS Wiring a Mallory Unilite or 9000 Series using Points Trigger ...

Страница 16: ...ct the warranty will be void It is the sole responsibility of the customer to determine that this item will work for the application they are intending MSD will accept no liability for custom applications Service In case of malfunction this MSD component will be repaired free of charge according to the terms of the warranty When returning MSD components for warranty service Proof of Purchase must ...

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