I’ve not taken it in yet. The earliest the dealer could get me in is June 15. Meanwhile I keep stewing on this issue. I’ve checked all my grounds again that I can see. I haven’t removed the ceiling liner to inspect above it but I can’t imagine it wearing out or shorting out. Maybe it’s the BCM. I just don’t know how that is wired up or what the complications might be. Weird thing is power illuminates my tester when I tested each and every fuse on the bcm. So if I have power coming from the bcm out to the wire harness, based on my limited experience as an intermediate beginner car wiring electrician, I keep coming back to thinking about a bad ground. All the wires to all the accessories on that harness have home runs to the bcm. BUT, If all the accessories on that wire harness share a common ground maybe that common ground has come loose somewhere. I just can’t find it… Frustrating problem.