Can anybody tell what i did wrong? I was going to put a different stereo in my 05 gxp bonnie, but didnt get any sound through the speakers, so i the old radio back in car wont start or chimes nor gauges, did i do something to the computer ...i used a wiring harness for the kenwood with pac but i dont understand why the electronics quit working cant find any fuses blown any help would be helpful.....