A couple of weeks ago my radio (sound) quit working, i have an aftermarket cd player and it works fine because i pulled it out of the dash and hooked a speaker directly to it and i got sound. So then i thought it must be the amp, so i bought a new one, and then that didnt fix it, its and HK system, does anyone have any ideas what might be wrong with my sound system? Its about to kill me not having anything to listen to while im driving. Thanks