I have a 2004 Pontiac Grand Am GT with a Monsoon stock stereo, and I was going to install an aftermarket stereo... I connected all the wires the way they were supposed to be, and the stereo comes on but there is no sound out of ANY of the speakers. I tried re-conecting the stock and it's not producing any sound now either... I think it might have something to do with the anti theft and I would like to know how to fix it?? Can you please help me??
