I have an 02 mustang gt with the mach system and there's 3 wires that are plugged into the back of the stock radio one says AMP. my boyfriend is giving me his Sony HU because he put an Alpine IVA-W200 in his tahoe and doesnt need it anymore. My question is, is what Harness do I use? I noticed alot of different harness's for the mustangs.

What are my options?

 

anyone?

 

You will need an adapter that you can get at like Circuit City or Crutchfield. The stereo never sounds as good though if you replace the head unit. I did it in mine and now I will be ripping out all the Mach stuff. Don't use a Sony head unit either. Sony is crap for car audio. Just my opinion and a quite a few others as well

 

all my speakers are aftermarket and I had them installed by circuit city.