67 Camaro wiring?

thats a nice car im sry i can't help you anyQuad L Handyman services

I don't think wiring diagrams would help you that much, since surely the car's audio system wiring is nearly all aftermarket work anyway. The original system probably consisted of an AM radio with just a single speaker, and no constant power going to the radio. So you can be sure that at the very least, the CD player has new speaker and constant wires. They probably got constant at the fuse box. My first guess would be that (somehow, I have no idea how) they mistakenly connected one of the CD player's wires to the horn wire in the car......now all you should have to do is test and find out which one. Just test each wire going to the radio for proper function-------is constant really constant? Is it still constant when you blow the horn? Then move on to the next wire and test again until you find the problem.