For the easiest install, your Montana is pre-wires and set up for the Furrion system. If you go that route, you just remove the cover on the back of your camera, plug in the camera and reattach to the wall. You pair the camera with the monitor. When you turn your head lights on your your running lights on the trailer, the camera is active. Turn off the lights and the camera shuts off.
If you go that route, get the 7 inch observation camera. You can also add the side cameras too.
I've had no issues with the Furrion system, but it did take me a while to adjust to the way it works, especially after adding the side camera's. It has night vision too, which is really weird when it flips over, because I very, very seldom ever travel after dark. When it did flip over, I honestly thought something was wrong with it. Then it dawned on me what I was seeing. Then, it made sense, and was actually pretty cool!
2019 Montana High Country 375FL
2014 Chevy Silverado Duramax, 6.6L Dually