I have a 2006 Unlimited Rubicon and I need help on two issues, please. The first is, are the interior lights supposed to come on when the tailgate is opened? Mine don't. The second is, I swapped out my battery last week and since then the CD player on my RBQ audio unit doesn't work. Sometimes, I can hear it trying to cycle, like it's trying to play a disk. If I put it in CD mode and hit one of the numbered buttons, it tries to cycle and CD error shows in the display. The same thing happens if I try to eject my CDs. Jeep tells me that the fix is to replace the unit. Any Suggestions.