While I don't have a motorhome I would look into the it to make sure they have the factory sat connections promised. I just bought an 2009 Sandstorm toyhauler that was supposed to be sat and cable ready and is not. I am now fighting with the dealer to install this wiring as I had it wrote in the agreement as well to be preped for it. The factory advertised this as being ready for it. It is no small job to run it in properly if it is not in there from factory .
2007 3500 Dodge quad cab 5.9
2007 Suzuki King Quad
2009 29FBSP Sandstorm Toyhauler