MSD 8918 Tach Signal GMR Pickup Installation - Manual (Page 2)

2 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
BLACK GROUND
MAGNETIC
CONNECTOR
NOT USED
TO BATTERY
WHITE
BLACK
ORANGE
WHITE
BLACK
ORANGE
RED
TO BATTERY
BLACK
TRIGGER INPUT
GMR PICKUP
RED
RED RED
GREEN
SWITCHED
12 VOLT
SIGNAL
OUTPUT
GREEN
CD IGNITION PRIMARY COIL (+) WIRE
(MSD - ORANGE)
BOTH WASHERS MUST BE UNDER METAL TAB
METAL TAB
GMR PICKUP
NOTE: The brass screw must be used for proper operation.
TO RPM
ACTIVATED DEVICE
Figure 1 Installation with a Capacitive Discharge Ignition Control.
BLACK GROUND
GMR PICKUP
RED RED
GREEN
SWITCHED
12 VOLT
SIGNAL
OUTPUT
GREEN
GMR PICKUP
NOTE: The brass screw must be used for proper operation.
PRIMARY COIL (+) WIRE OR
DIESEL INJECTOR 12 VOLT WIRE
BOTH WASHERS MUST BE ON TOP OF METAL TAB METAL TAB
COIL
HARNESS
IGNITION
COIL
IGNITION
COIL
IGNITION
COIL
IGNITION
COIL
COIL (+)
12 VOLTS
COIL (-)
TRIGGER 4
COIL (-)
TRIGGER 3
COIL (-)
TRIGGER 2
COIL (-)
TRIGGER 1
GMR PICKUP
TO RPM ACTIVATED
DEVICE
Figure 2 Installation on an Inductive Distributorless Ignition System.
Note: The device that
the green signal
output wire is at-
tached must be
programmed for
4, 6 or 8 cylinder
depending on
application.
Note: The device that the green signal output wire is attached
must be programmed for single (1) cylinder operation.