Originally Posted by Fungus
SAT may go to the connection on the outside of the trailer.
HDMI splitter could be sending HDMI signals to the lounge television and the bedroom television. One input; two outputs. The DVD/Blu-ray player sends a signal to both televisions. If it’s not connected, maybe someone omitted one of the televisions as a display. I replaced the bedroom television with a wall-mounted air purifier. All the cables there are now stuffed into the wall. HDMI at other end is disconnected.
I guess I didn't explain quite right. The HDMI splitter that is present definitely does send signal to both TVs and I assume that coax marked Sat goes to the side of the trailer so a Sat dish can be attached.
The thing is that there is an extra, very heavy duty HDMI cable and 12 VT source that are not and have never been connected to anything. That is the mystery.