I have one installed using a rockford fosgate pmx-3 stereo unit. I was extremely happy with the results after my initial install, but after driving for 5 minutes, both camera and head unit had enough dust build up to render it useless.
I have this one in my R. I have used these on several machines. Camera is waterproof, But i always throw a freezer bag over monitor when washing car. I use the hard wire rather than the wireless method so I don't need any power at rear of car. I also put the shade on bottom side and camera stays pretty clean.
On my 1000X I use this camera and WIFI transmitter. I can connect it to an old Android phone I have mounted for music or I can put my GPS 8" table in split screen mode with the camera on one side and GPS on the other. I usually keep the GPS full screen and run the backup camera on Android phone that is mounted on the roll bar under the roof.