so i am not a noob whatsoever when it comes to car audio, but i have no idea about a grand prix. I have a 2002 GpGt and today i got a dash kit and wiring harness to install my pioneer head unit but the wiring harness wouldnt connect, later in the night my friends were gonna head out to best buy to pick up a few things so i thought i would stroll over to the car audio section and speak with a representative. I told him my situation and he continued to tell me if i wanted to keep my door chimes, hud, and the little things that is the diagram of your car with all the different pieces of information, my wiring harness would set me back $120!!! i was very disappointed being 17 $120 is not a large amount of money but that seems to be a little ridiculous for a wiring harness. Does anyone know how i can get the wiring harness for a cheaper price? Please let me know ASAP. thanks in advance.