i have an 06 coupe auto with prem package but i am not sure if i have or dont have sat radio cause i bought the car used. i currently dont have a sat subscription. i tried to install the pac aai-nis2 a few days ago. i followed myg35mods which explained everything great. after making sure many times that the two connections in the back of the radio were ok and other two pluged into the harnesses that were in the radio before i put everything back together and the unit didnt work. all my radio does when i hit the radio button is scroll through am fm1 and fm2, i dont get a signal at all for the pac unit. im sure the connections are good. is it possible its a bad pac unit? anyone have problems before? any help would be great. i just wanna play my mp3 player through my car. thanks