| it shouldnt matter, you can just wire up the purchased wireharness to the one that came with the radio, so you dont have to worry about what each wire does in the car, everythign will match up.
if you are talking abotu aftermarket colors, purple and purple with a black stripe are pos and neg for one of the rear speakers.
strange, all the wiring databases i checked didnt show any purple wires in the stock harness for the radio |