The crap camera connection on the back of the receiver seems to be just another THOR chronic condition. I installed a different head unit. Before doing that, I had pulled the trim from around the head unit to check on the model # of the cheap Pioneer unit that was in place. All of a sudden, I had no backup camera. I you ever have the chance to do this, don't be surprised. The workmanship there is just as bad as on most other things.
So not only are cabinets a major downfall with Thor, so are electrical connections.