Okay....found lots of successful installs on another forum....and here's what they used to get the rearview cam integrated into their Jeep RER radios:
MyGIG Lockpick v.3 with AV9003 multimedia harness
Any rearview camera
It sounds like this setup works easily. It will automatically turn the camera on when you shift to reverse....or you can double click the Uconnect button to get it to go on when you're not in reverse. There was also info on mounting a front cam to assist in parking...or navigating over tough rocks, holes....or even Hummers...