Not that easy to do once the RV is finished, HOWEVER there is a "plan B"
https://www.amazon.com/s/?ie=UTF8&ke...l_939ap7z20i_e
The link is to an amazon search page
I/R Extenders come in a few different types One type has a receiver you put .. In this case. in the living room,. It goes between the Coax and the TV'
At the othe rend of the "living roon tv" coax (Between i8t and the splitter or switch) is the Transmitter nodule (Basically a Bias-T device) which you plug an I/R Blaster device into.. This goes where the Sat receiver can see it. .Now you can control the Sat from either room .
That is the simpliest solution. Do not know why factories do not offer it. Mine is from Radio Shack and currently NOT in use but then I do the same job.... Differently.