I need some help with a satellite tuner. My 2004 A4 Sedan is wired for satellite radio but did not come with a tuner. I recently purchased a Sirius tuner and hooked it up this afternoon. You could tell one was never hooked up since the wiring harness was wrapped up. When I press the SAT button in the car, it still says NO SAT RADIO. Could it be that the other end of the wiring harness is not plugged into the radio? I tried to see if getting it activated would work but it didn't. I may have not provider them with the correct ESN since the tuner shows a SN ID. It didn't work so now I need to find out about the other end of the harness. Any words of advice?