I have a 2001 Audi A4 that I bought from a GI being deployed overseas. He had a switch that controlled some LED lights that the cord got caught on something and ripped out. Since it happened my a/c controls will not work. When I turn the lights on the dash lights up. But it will not turn on at all. I checked the fuse and its fine. Anyone have any suggestions on what I can do or what the problem could be? Ive exhausted myself trying to figure this out.