OK, just getting back to this today. I was at my campsite and took some pictures. I called customer service earlier this week and must have spoke with a disgruntled employee as he was of little use. Maybe I'll try again and specifically ask for the wiring diagram as mentioned previously.
In the meantime, here are my pictures and descriptions of their locations. If anyone can tell me how this puzzle fits together, I'd be very grateful.
Anyway, I do not have the panel as described by TDG in the cabinet to the left of the fireplace. However, I do have a hole drilled into the back of the cabinet leading to the area where the TV rests when the lift is down. The picture below is of that area.
Below is a picture of the area I think is where the cable/satellite comes into the camper. If anyone could confirm/deny this, that'd be great.
Below is a picture of the plate behind the TV in the bedroom. It'd be nice to know where the signal comes into this plate from.
Here is the other plate I found. This is in the basement, a couple feet to the right of the door leading into the camper. I'm not sure what the other connection is on the plate with the coax jack, but it looks an awful lot like a cigarette lighter to me. If anyone knows anything about this, please pass that info along. I'm not sure why, or how to fix it, but this should be rotated 90 degrees clockwise to see it in its proper orientation.