the factory wires the over the air antenna to the amplifier, then to a 3 way splitter, then coax to the TVs. when you push the button on the amplifier the green light go's out and switches to campground cable or satellite what ever you hook up to the out side cable port on the side of the coach. I by passed the system only using the coax to the bedroom dish receiver. I have a second receiver in the kitchen cabinet above the sink. I then ran a 3 way hdmi splitter to the kitchen TV and outdoor TV. 3g cable from the roof satellite to the receivers. the only way you can watch 3 TVs with there own programs is to buy a top of the line winegrad traveler for about 1400 dollars plus installation. don't believe the sales bs , do your own homework they will sell you anything. I got one sales person so mad because I called him on his bs he walked away,lol