I have a 03 2500hd silverado that has rse rear seat entertainment and when I bought the truck it had an aftermarket radio in it and of course no sound through the rse so I bought the gmos 100 to make it work right and I went to install it and they previouse owner had cut the 12 pin wire conector and all that was showing was bear wire. So I called the previouse owner and he admited to cutting it off and said he still had the conector so I drove over and got it and there were no wires in the conector he had pulled them out so my ? Is what wires go in the conector? There are only 4 wires that go in the conector I just don't know wich color goes in what hole I guess I need a wiring diagram. I know the stock CD player had 2 conectors one was the main conector with the speakers and stuff and the one I need is the 4 wire 12 pin plug that im pretty sure works the rse. if someone could tell me what color goes in what hole that would be great my truck doesn't have xm or steering controls just the rse and also has Bose in it thank u

 

Ok if he just cut the wires off the original wire harness then you should just rewire the wire harness you bought with the exposed wires inside the radio slot