Speaking of the ever changing complexity.....I have a similar situation. I have a 2011 8317ss and on the outside there is a connection for cable in, and another for satellite. On the inside, right below the main TV in the living room, there is another set of connections for cable and satellite. (Nothing is hooked up to either of these inside.) There is also a "switch" box below that with 4 settings: (GAME), (CABLE/SATELLITE), (MP3/TV), and (XM/ipod). Just above this switch are 3 rows of RCA jacks. The first row is yellow, red, and white labeled (GAME). The second row is also yellow, red, and white and is labeled (CABLE/SATELLITE). The last row of RCA jacks is only red and white and is labeled (MP3/TV). When I plug "cable" in outside, all TV's inside work no matter what the settings are on the switch inside. When I plug the satellite antenna into the satellite in on the outside of the rig, I try switching the switch to (Cable/Satellite), running a cable from the inside Satellite cable connection to the receiver, and running RCA cables into the 3 RCA jacks labeled (Cable/SATELLITE) from the Satellite receiver. I get nothing. After playing with it for quite a while with different settings, I finally did as the person above and went directly from the antenna to the receiver, (through the front door), and then to the bedroom TV and it worked.
I saw above where you mentioned to unplug from cable connection and plug into Satellite connection inside, but there is nothing plugged into the cable connection inside my rig. My main and bedroom TV's must already be wired directly into cable.
I was able to get the bedroom TV off the wall and look behind it, but I can not get the flatscreen off the wall in the living room to look behind it. I assumed you just lift straight up like on the bedroom one, but I tried and it does not seem to budge, and I was afraid I was going to break it. I looked in my manuals and see nothing on hooking this up. Any help would be greatly appreciated.