On my 2013 Sunset Trail 32RL 5th wheel. All the TV and audio cable connections were above the living area TV in the bottom of the cabinet above the TV. I had to remove the cabinet floor (held in place by screws inside the cabinet) to access the wiring connections. Fortunately, Crossroads labeled all the coax and TV wires indicated where they came from and what they supported/connected to.
2015 Ford F-250 SD 4X4
2013 Sunset Trail 32RL 5th Wheel (no longer own)