I purchased a 2000 pontiac sunfire and unfortunately, when installing a new stereo the adapter that is connected to my cars stereo wires was cut. There was a whole mess of problems, like my car wouldn't start initially and then the chimes and car light wouldn't work. After attaching the head back on, and plugging it back into my old stereo I was able to listen to music. However, after messing with the wires again to connect them better the whole thing went, and my old stereo won't even play now. Is my car completely ****ed? Will I ever be able to attach my new stereo (even with the wiring harness that I should have used in the first place)? Or is my stereo just being retarded due to the bullshit anti-theft locks?