I spent a little time with the hummer. I wired in a stereo, hooked up the speakers, cleaned up some of the wire mess behind the dash, got the volt meter hooked up and got lights to three of the gauges. I still need to figure out how to hook up the oil pressure gauge and water temp gauge. This was the first time I hooked up a stereo with out a vehicle radio harness. It wasn't too bad, I got a diagram showing what each wire goes to.