reverse glow gauges

  1. S

    1988 Gt Reverse Glow Gauges

    Hey guys, I started installing my reverse glow gauges on my 88 GT and I've run into a problem. The instructions say to splice the black wire of the inverter to the black wire of the headlight switch. But as you can see through my pictures, there are 2 black wires. I tried them both individually...