The first thing I would do it to contact Jayco for a a/v wiring schematic for your rig. It makes it much easier to know where the coax runs and from where. I have heard they will not respond in a positive manner to this request via email if your rig in still under warranty (no idea why), but just call them. It is easy to say NO in an email, but much harder to a live person. They emailed me a copy of mine in minutes.
2006 GMC 2500HD CCSB 4x4 Duramax/Allison, Titan 52 gallon fuel tank, Prodigy Controller, B&W Companion Hitch
2010 Jayco Designer 35RLTS, Cummins/Onan RV QG 5500 EVAP, Progressive Industries EMS-PT50C, TST Systems 507 TPMS, RV Flex Armor Roof