94 cav wire colors

ive about had it

about a year ago, my younger brother ripped out the stereo cable adaptor deal so he could hook up a tape player from a diff. car.

Now, that tape player has been removed by him, and i bought a cd player for the car. Only thing is, the replacement part from GM is all white wires, so it wouldnt be much help.

How can i found out (or does anyone know?) which wires are which..........
I mean, the speaker wires i can figure out with some time and some tape. But the normal 3/4 power wires im clueless about. The cav has a black one, so i know thats ground. There is no red, and there are two yellows. So im straight confused.

If anyone can help, it would bemuch appreciated.

Thanks,
Bill

What up... i think i can help, i have a 92 but i think there the same. there should be two yellow wires, one with a black stripe and one just plain, the one with the black stripe is the remote wire, the other yellow is the constant power.