First, thanks to members OldHatt45, mmartin, and Redonion. What a great and helpful response. From the answers and looking at my coach it seems like there wasn't any standard way to mount and wire these. I don't know if my dome was installed at the factory or at the selling dealers but it is a very "clean" installation so I'm guessing factory. On my coach there are two coax cables coming from the dome. One of them goes directly to the midship TV cabinet and the other goes to the bedroom. They are not routed through the front compartment. So it appears that I will be able to use these as they are. Just mount my SWM splitter on the roof. The signal cable is another matter. The dome cable goes to the cabinet over the front door. But since the Trav'ler control box needs 110ac I think I will follow the suggestion to drill down directly to the midship tv cabinet and put the controller there. That will take some careful measuring
Again, thanks for the help and advice.