[Caddylackn]

I second the search for good grounds.

A DC circuit is a loop and the 12 volts and current has to be able to get all the way back to the battery through the negative terminal for it to work. So battery must be properly grounded to the frame, then all accessories grounded to the frame. The cab must be grounded to the frame as well, as many accessories are grounded behind the dash to the sheet metal.