If you are running cable TV from a house, why can't you install it on the cable side? The cable runs from the back to the living room and splits to the other jacks. No different than in a house. You will just need boxes at the TV's you are using. Now you may need a booster because of the resistance in the length of cable and the splitter.
Bert, Cathy, Kylie & Kaitlin
2014 SunsetTrail Reserve 32BH
2009 Silverado 3500HD LTZ 4X4 6.6L Duramax
YouTube LetsRV Instagram LetsRV_