Hello all, I've recently been having some issues my 2006 DTS's rear passenger door. The car is a Luxury III trim with heated rear seats, rear lumber support, and Bose Premium Sound w/out navigation. My issue is this; the right rear passenger side door controls for the heated seat and lumbar are not working, and neither are the door speaker nor the entry light, but the window control is still working. The controls are not lighting up either, which tells me that either the electrical supply to the switches, speaker, and entry light have been compromised or there is a broken ground wire. Is this a common issue? Do these all share a common power source? Is there anything specific I should look for? I wouldn't have thought that the speaker, entry light, and seat controls would have anything to do with one-another but they all went at the same time. Could it possibly be pinched wires somewhere?