Purchased a 16 Wildcat 295RSX

[Juniorz]

Just purchased the Wildcat 295RSX yesterday. The Rear Kitchen one I was looking at kind of fell through. This one is like mint condition. Lots to figure out what does what etc.
I have a couple questions if anyone knows. I appreciate the info..

1. What is the signal strength wall switch? I included a picture

2. Does anyone use a DISH receiver with the DV1200 that comes with the unit? I only see one HDMI and thats an output to the television.

3. Does the bedroom tv share the same as the living area tv? or is that the roof antenna?

4. Where does one buy OEM parts for the RV? One of the LED front blue lights doesn't work ?


Thanks again
Mike