I have a 2014 278ts with l/r TV, outside TV and b/r TV. The splitter for the l/r and outside TV is behind the fireplace which is under the TV. The splitter for the rear TV I found behind the wall in the right overhead compartment where the antenna switch is located. I had a snowy pictures the two front tvs but not the rear one. Started pulling the coax out of the wall and found the splitter. Every connections found anywhere in the coach was loose from the factory. Tightened them up and no more problems.