I have a Shaker 1000 sound system in my 07 GT500, the problem I have with it is the lights (turn on with parking/headlights) do not work, and neither does the line input. If I hook up an ipod and scroll through by pushing the Aux button it doesnt even have the line in option. My question is, does this radio require some type of programming? The car had 2600 miles on it when I bought it and I don't believe the previous owner ever put a CD in it let alone use the line input. The car has obviously sat for most of its life so I would think it could be possible to lose some type of programming if the battery wasn't maintained while stored. I am hoping it is an easy fix and I have not been able to find any concrete info. on this problem, any help would be greatly appreciated.