Owners manual

INSTALLATION INSTRUCTIONS 5
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Figure 8 Installation to a GM HEI with a 4-Pin Module (Magnetic Trigger).
Figure 9 Wiring with an MSD PN 8874, 8876 or 8877 Harness.
Note: The PN 8876 and PN 8877 Harnesses install the same as the 8874 shown.
MAGNETIC PICKUP
(NOT USED)
GREEN (-)
VIOLET (+)
GRAY
TACH OUTPUT
DIGITAL 6A
C-
GND
B+
18” BLACK TO
ENGINE GROUND
BLACK
TO GROUND
WHITE
(NOT USED)
RED
YELLOW
YELLOW WHITE
RED
MAGNETIC PICKUP
(NOT USED)
GREEN (-)
VIOLET (+)
GRAY
TACH OUTPUT
DIGITAL 6A
TIMING
CONTROL UNIT
A
D
V
A
N
C
E
TM
TIMING
CONTROL
MAGNETIC PICKUP
(NOT USED)