92 Pontiac Bonneville

Installing a CD Head unit into the car, got all the connection hooked up and even pulled the Bonnevilles wiring diagram to match wiring kit.  Head Unit lights up but I get no sound.  Anybody have a clue as to why I get no sound????  Help!

This one gets me too! Ford Explorers have this same problem when exchanging the factory head-unit with an aftermarket one because the explorer has a separate amplifier that will not operate when changing out the factory radio, the cure for the explorer is to either purchase what they call an amplifier bypass harness or to run speaker wire from the head unit directly to each speaker.  You may want to run speaker wire from each speaker directly to your head unit. If you still get no sound, then the problem lies within your head unit...........     

Thanks for the information.  I was hoping to not have to cut the factory wires but i might have to.