Re: Whole sterio stopped working..
i had a unit long ago that had a separate harness for output in the back, and it came loose and I lost all sound until I found the problem. If the head unit and amp still have power, it doesn't sound like a fuse or a ground wire. check rca cables or speaker lines in back of unit or make sure the rca cable wasn't severed somewhere due to friction or wear, and make sure you don't have one of those pesky mute buttons on the front of the head unit, that maybe your driver accidenally hit, without realizing it. Sounds stupid, but I know it's happened to people before.