I have a 2005 mercury montego premiere and just installed a new head unit. Everything worked fine. I have a pioneer head unit that plays DVDs but I didn't wire it to my parking brake when I first put it in. Today I decided to do so got it all out, then had an urgent call and couldn't connect it. As I was putting the radio back in, something sparked and started to smoke, (yellow cords where showing a little bit, might have touched metal) I took it to a car audio shop and tested the head unit, and it worked just fine. Could I have broke(shoted) the harness that connects the colored wires together and the other side connects to my car wiring(they plug in) OR could I have broke something with my car wiring. I checked audio fuses, they are fine. PLEASE HELP I BEG
Its very simple, just check the wiring harness to the radio one wire at a time and if all are okay then you have either a bad PCM or BCM. You'll need a scanner to check these.
