Nearly all travel trailers are now prepped for the Furrion systems like the Furrion RV Observation Camera System # FOS43TASF that you referenced. When Furrion was here not long ago they bragged that all RVs that are prepped for a camera are prepped for a Furrion system. The # FOS43TASF is what you would need. Or for a larger 5 inch screen part # FOS05TASF that not only has a larger screen, but also will allow you to add up to 3 additional cameras to give you a total of four. view full answer...