INSTALLATION INSTRUCTIONS

5

RAS

ON/OFF

Figure 7 Primary Wiring to a GM HEI with a 5 or 7-Pin Module (Points Trigger).

Figure 6 Primary Wiring to a GM HEI with a 4-Pin Module (Magnetic Pickup Trigger).

GM HEI DISTRIBUTOR

The 7AL-3 can be wired to the GM HEI Distributor. You must identify which module your distributor

has to determine which wiring diagram to use. Count the number of pins or terminals on the module

and follow the diagram for a 4-pin or 7-pin module.

RAS

ON/OFF

OUTPUT

RAS

IGN

TACH

START

RETARD

PNTS

M+

M-

RET #1

RET #2

RET #3

RET #4

LAUNCH

BURNOUT

COIL +

COIL -

BATT -

BATT +

TO BATTERY

NEGATIVE

TO BATTERY

POSITIVE

4-PIN MODULE

NOTE: A LOW RESISTANCE HEI ROTOR

BUSHING, PN 8412, MUST BE USED

WITH AN MSD 7AL-3 IGNITION.

PN 8861 HARNESS

(THIS HARNESS IS AVAILABLE FROM MSD)

GREEN M-

VIOLET M+

BLACK

BLACK

RED

18" BLK

ORANGE

ORANGE

KEY

CONNECTOR

WHITE

JUMPER

TO ENGINE OR

CHASSIS GROUND

HEAVY RED

OR PINK WIRE

FROM CAR

WIRING HARNESS

NOTE:MODULE AND WIRING

NEEDS TO BE REMOVED.