We recently bought (about a month ago) a 2104 Columbus 365RL and when I went to test the various antenna, cable and satellite connections, some didn't work at all, and others seemed to be mislabeled.
Because, like many of you, I would like to hook up our Direct TV (in HD) and have it in both the living room and the bedroom. As for our DirecTV HR34 HD DVR being able to "talk" to DirecTV, it's has an ethernet cabel going to the WRT54GS wireless router and I have the router running in "Wireless Bridge" mode. Basically, it's like having any wireless access point (the park's, my phone's hot spot or my Verizon Jetpack) providing a wireless and wired (for DirecTV DVR) internet connection to the coach.
As far as switching from one source to another, that is handled on the TV's (HDMI 1, HDMI 2, TV / Cable)
Boy... Was I in for a surprise on how goofed up it all was. Basically, I grabbed an ohm meter, a couple of safety pins (for cable jack jumpers) and started tracing everything down, then drew up a diagram. The colors I used, were purely to help better visualize the layout. But the labels on the jacks are as they are in the coach.
I'm not a gambling man, but I would consider a wager that many of your RV's might have some similar cabling shenanigans going on and as such, my recommendation is that you just take about 30 minutes to an hour and trace it out your self and draw a diagram. (FWIW, I scribbled it on paper, then drew it out in Windows Paintbrush)
Anyway... here is my result.
Tina + Dutch and Bell, Bobo, Harley, Buddy (the dogs)
2011 F350 Lariat 4x4 DRW SuperCrew 6.7L (B&W setup w/Air Lift 5000 Ultimate)
2014 Columbus 365RL (Airflex and Voyager package)
Nights Camped 2014 - 154
, 2015 - 32, 2016 - 4