Hey all, I installed a sat radio (sirius) that doesn't work. The dealer said he took the radio out & it worked in another car w/ sat radio, and he said that the unit was hooked up right. He then said that the unit must be bad. I told him that is my 2nd one. What else could be wrong besides those two things? I told him to check the pre-wire b/c I thought maybe it had a short or something? Any help would be *greatly* appreciated.. as I have to go back and give me case to them at 5 as to what it could be?