hey guys, Im a new owner of a 93' 325is and the first thing i wanted to do was replace the stock radio. It had a pioneer 6 disk changer hooked up but the car was pre-wired to take one. The previous owner had it put in but it sucks (skips too much). So i did like normal, attatched the wire harness and hooked it up...no sound. The HU worked, it played cds but no sound from speakers. So i hooked up the stock steroe again until i can figure out what went wrong, now the cd changer wont work with the stock radio. Any ideas??