I ordered the OEM Mopar backup camera for my 2014 WK2 for about $300 and installed it myself. It took a while because I haven't removed interior panels in many vehicles and my 2 year old was with me for a good portion of the install, but it came with directions that walked me through it pretty well.
I posted a video on Youtube
and part 3
). Since I was alone I took a lot of pictures, but never really got any video, so I just went through all the pictures explaining what I did. The most beneficial part should be seeing where all the panels clip into place since the instructions where kind of lacking in detail.
I'll try to scan the instructions in as a pdf and post them on a thread with the pictures as a DIY soon, but hopefully this will help out some guys in the mean time.