I sould know this but I just can't seem to figure it out, and can't find it in any old posts. I am replacing the Infinity in my 02 and the speakers. Is there a way to make it work w/ factory wiring? I was thinking for some reason only the fronts are amped, but I get no sound from the factory rears with my Sony installed. I DO NOT want to hook up the factory amp, I already know how to do that but it wouldn't help b/c I'm replacing the door speakers any way. So does any one know of a trick in the dash wiring, ar can you tell me the speaker color codes of the 02 so I can try to by-pass the amp before I go to the hassel of running all new wire? Thanks!