Originally Posted by Mike Williams
Outside of the trailer has two ports (one Sat and one Cable).
Primary TV has one face plate. If I remember correctly, it has Sat In and the Cable / Booster In.
One cable jack in bedroom on roof.
A photo of the amp/booster would help identify the booster.
Based on your info, the cable port outside the trailer most likely is connected directly to the amp/booster. The TV antenna on the top of the trailer is connected directly to the booster/amp. The booster/amp has an output the feeds the main TV and most have a 2nd connection or a splitter that feeds the bedroom TV. ALL of these connections are behind the booster/amp faceplate.
The satellite port outside the trailer is most likely connected to the faceplate near the main TV. You say it is labeled "Sat In". In reality, I would call it "Sat Dish Out", it is used to connect your satellite receiver near the main TV to the dish that you would connect to the satellite port on the outside of the trailer.
Hope that helps you understand the wiring.
Hard for me to determine the purpose of the 2nd jack that you say is labeled "Cable In" without some photos.