There is a rubber grommet in the driver foot well on the left part of the firewall. Feed the cable from the instrument cluster where the light is mounted, behind the steering column, and through that grommet. The wire comes out vertically from a hole behind the air conditioning condenser.

 Run the cable along the fire wall tying it to the existing wiring harness to the ignition box.

 The plug with the coil driver wires are in the back of the ignition box, red to red, black to the  bracket, and green to any of the other 3 coil driver wires.

 Set the shift light to "2 cylinder" mode,  since each coil driver output drives two coils each.

Install Help on Mustang Collective