Agreed with Andrew. I do have the AV package in mine, but pulling the Wineguard amp plate out will reveal a behind fridge cavity that should have all of the wiring that you are looking for. The remainder of the wiring terminates behind the stereo and can be easily accessed by removing three screws in the overhead cabinet side panel. You will find a cable of three (yellow/video, red/right and white/left) RCA jacks to send audio and video to the TV, and a separate L/R cable to send audio back to the stereo from the TV. Of course, you'll need an A/V capable head unit to use all of this.
Chris and Christina- Boerne, TX / Evergreen, CO - TAC TX-7
2008 27'FB Int'l Signature CCD