Well I went out and bought me a Jeep and yeah...its gotta haev a CD player in it. It is a 96 Cherokee I already know which is which on the harness that came with the radio(cause its labeled) but I have no idea which one is which on the harness that is connected to the jeep, ya know the one I had to cut the plug off of from the stock head unit. I figures out the ground wire and front speakers but the rest I don't know which color is which. If any of you can help that would be great. Thanks

http://www.installdoctor.com/Harnesses/DCP-Wiring.pdf

see if this helps, would have been easyer to just get an adaptor plug. wouldn't have had to cut any wires.