Installation manual

- 11 - Ford Racing Technical Support (800)FORD-788
M-12071-A50
REVISION 2
8.3 The final connections to be made will be the Main Power Supply and the Ground
Wire. This harness has been designed for use with the battery mounted in the front
of the engine compartment on the Left (Driver, USA) side. If your battery is in a
different location, you should lengthen these wires using a 10 gauge wire and run
them DIRECTLY to the battery. These extensions should be soldered. By running
these wires directly to the battery, this will insure a proper ground, and eliminate
many potential problems. TAKE THE TIME TO DO IT RIGHT!
A. Connect the Red 12 Gauge wire to the positive side of the battery THROUGH
AN INLINE FUSE rated at 50 amps. IF YOU DO NOT USE AN INLINE FUSE,
YOU RUN THE RISK OF FIRE SHOULD THE CIRCUIT EVER SHORT! (This
wire may have the appearance of being smaller than a conventional 12 gauge
wire. This is because it is ‘TXL’ type wire and the sheathing is thinner.) (Page
6, Connector #18)
B. Connect the Black 12 Gauge wire DIRECTLY to the negative side of the
battery. (This wire may have the appearance of being smaller than a
conventional 12 gauge wire. This is because it is ‘TXL’ type wire and the
sheathing is thinner.) (Page 6, Connector #17)
8.4 9-Pin Disconnect Layout: