As I wrote on FaceBook, which satellite provider do you have and do you plan to have a DVR??? One other question I forgot is how interested are you in HD??
The Carryout has two RF outputs. The 2005 Montana has only one cable/satellite RF connectors. There is also a splitter in the circuit which can cause problems. The TV wiring diagram is here:
http://www.montanaowners.com/forums/...ad.php?t=37324
I have DirecTV, Dish may/is different. On my 2005, I installed two dedicated RF connections in place of the Phone Line receptacle on the side wall. Behind that I used a DirecTV splitter to power two cables to the living room receiver (it was a DVR) and a third cable to the bedroom. I ran a new cable but if you don't care about using the batwing antenna or park cable to the bedroom, you could repurpose the current cable which runs there from the living room. You will need a receiver in the bedroom also.
DirecTV has a much better technology called Single Wire Module (SWM) which only requires one wire to each receiver. But the Carryout doesn't support it. The Carryout also doesn't do HD for DirecTV.
So the provider of choice will impact how much work you will have to do. There have been several postings about the Carryout and how to use it. If the Search function was working it would be easy to find them. I will look and see if I can find some but don't hold out much hope.