MSD 8731 2-Step Ford 5.0L Mod Motor 2011 Installation - Manual (Page 3)

INSTALLATION INSTRUCTIONS 3
M S D I G N I T I O N
• W W W . M S D I G N I T I O N . C O M • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • FA X ( 9 1 5 ) 8 5 7 - 3 3 4 4
CONNECT THE ACTIVATION WIRE
The launch rpm limit can be activated through a ground or a 12 volt
source.
Ground: Switch the Blue wire to ground to activate the launch limit.
12 volts: Connect the White/Blue wire to 12 volts to activate the
launch limit.
If you are planning to use the factory clutch switch to activate the
2-Step, note that there may be variations in factory wiring colors and
outputs. It is recommended that you have the factory wiring diagram
and schematic. Also, check any wiring for voltage or ground with the
key on, during cranking and when the engine is running. A relay may
be required with factory wiring systems.
GROUND
ACTIVATION
WIRES WHITE BLUE
BLUE
ACTIVATES
WITH 12 VOLTS
OR GROUND
TAN
RED
BLACK
GRAY
NOTE: IF THE LED DOESN'T TURN ON, AS
DETAILED IN STEP 5, FOLLOW THIS
DIAGRAM.
OR
NOTE: DO NOT USE THE BLUE AND BLUE/WHITE
WIRES AT THE SAME TIME.
BLUE - ACTIVATED WHEN GROUND
WHITE/BLUE - ACTIVATED W/12 VOLTS
Figure 3 Alternate Wiring.
Figure 5 Wiring the Launch Activation Wire.
Figure 4 Activation Wire.
BLUE
ACTIVATION
WIRE
BLUE
ACTIVATION
WIRE