Originally Posted by chxf
In the former cars when I changed a radio I always looked on the wire labels. Usually it's marked what they are for and than just connected the corresponding ones.
I didn't take out the stock radio yet. Aren't there any labels on the wires?
I don't think they are labeled but a schematic is just a click away... ;-) The wiring harness adapter is very well labeled and makes installing a new head unit as simple as splicing (usually like colored) wires together.