Audio Systems: wiring code for 1991 chevy stereo, bose amp, gm trucks

Question
im going to put in a new cd player in place of my cassette stereo , it has a bose amp built in, and 14 wires coming out of the back, i would like to know which wires lead to the matchings so i can install my new unit correctly,  

Answer
Buy an install kit, wire adapter harness and antenna adapter, before starting. The wire adaptor harness will be labelled correctly and come with a list of what wire is what.
GM trucks did not come with a true Bose system until a few years ago, so you should have no interface issues.