I'm rebuilding my 85 silverado and have completely redone the insrtument cluster with new autometer gauges. Ive got everything wired up and hooked up but the fuel level gauge in it. Now i just unplugged the harness from the back of the old cluster since i ran pretty much new everything. I was wondering if anyone has done this to there truck or by chance if someone knew what wire i need to splice into out of the harness that plugs into for the fuel sending unit?