I know with mine, I had to remove some panels and look for it. My suggestion is to open any panels near where the main TV is and see if you find a coax not connected to anything. That's likely it. I would also contact Jayco Motorized Customer Service and ask them for the satellite wiring diagram for your coach. This should help you identify what cables are where and in some cases they're color coded to help.
I would also check out this thread which has alot of the same information in it. https://www.jaycoowners.com/forums/f...ion-77417.html