2005 TJ. I have never been able to find a write up for a backup camera on a TJ, other than mounting a camera in the rear tire which I did not want.
I have a single din (Jensen VX7012). For me, this stereo works great (only 4 speaker/sub woofer set up). The stereo had the camera capability so I bought one from Amazon for $20. Easy hook up...ran the wiring through the dash and over to the driver's side, following the rear wiper wiring to the tailgate. My husband drilled a hole in the center of the bumper for me and I was able to do the wiring myself. I'm pretty happy with the way it turned out (I did not tap into the reverse tail light as I wanted to be able to use the camera at any time).