Quote Originally Posted by FordMan77 View Post
Not sure what year this is for (maybe a 97?). What stereo are you trying to install? Stock, aftermarket?? Need some info here. If it's an aftermarket deck then you can likely get a harness adapter for it without worrying what wire is which and cutting the stock harness up. I installed a new Alpine in my 00 GT with a plug and play adapter and also retained my steering wheel controls with another adapter.
Sorry... 97' GTP, Stereo is an off-brand aftermarket. I just got this car used and it had no stereo in it, but the harness to the head unit is there. Here's the wiring schematic for the stereo;