the sound in my car is gone on the left side, dont know if i blew the amp when i was putting in the phone kit or not.  any one have any ideas??? i read on here that the system doesn't like when aftermarket stuff is put on, i have an alpine mp3 cd changer (came with the car) and when i unplugged and reconnected the white connector thats on the bodywork just above and behind it the sound came back in the front left but went again after a while.  is the h/u fecked???  everything is stock, business h/u with standard speakers.  anyone got ideas???

thanks.

D.