MSD 8739 Two Step Module Selector 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
Figure 3 Basic Three Step Installation.
T
A
C
H
C+
C-
IGN
PTS
M+
M-
GROUND
RPM
TO GROUND
TO 12V
MODULE 2 - ACTIVE WITH NO VOLTAGE.
MODULE 1 - ACTIVE WITH 12 VOLTS ON RED WIRE.
MODULE 3 - ACTIVE WITH 12 VOLTS ON BLUE WIRE. THIS
MODULE WILL ALSO BE ACTIVE IF 12 VOLTS
ARE SUPPLIED TO THE RED AND BLUE WIRES.
TO 12V
CLUTCH SWITCH
MSD MICRO SWITCH
PN 8820
BLUE
RED
BLACK
TO LINE LOCK
OR TRANS-BRAKE
SOLENOID
MODULE 2 MODULE 1
PN 8737
MODULE SELECTOR
3
M
O
D
U
L
E
3
AUTOTRONIC CONTROLS CORPORATION
1490 HENRY BRENNAN DR, EL PASO, TX 79936
TM
BLACK
TO
GROUND
RELAY
PN 8961
RED
JUMPER
(+) 12V
CLUTCH
SWITCH
LINE LOCK
SOLENOID
REV LIMITER
(+) 12V
IF YOUR APPLICATION REQUIRES USING THE CLUTCH FOR EVERY SHIFT,
THIS DIAGRAM WILL PROVIDE A REV LIMIT ON THE LAUNCH ONLY AND
HOLD THE LINE LOCK ON UNTIL THE CLUTCH PEDAL IS RELEASED.
MOMENTARY
PUSH BUTTON
SWITCH
TO
GROUND
TO
GROUND
MODULE SELECTOR
S TEP
MODULE 2 MODULE 1
PN 8739
AUTOTRONIC CONTROLS CORPORATION
1490 HENRY BRENNAN DR, EL PASO, TX 79936
TM
87A
87 NO
NC
C
86 85
30
Figure 2 Wiring a Two Step to a Latching Relay.