MSD 7330 7AL-3 Ignition Control Installation - Manual (Page 5)

INSTALLATION INSTRUCTIONS 5
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
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
RE
D
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.