This comprehensive video will show you how to determine if your car's control unit can be self-programmed for a rearview camera, where to find one for chump change, and every step of how to install, program and (if necessary) change the options to match the camera.
Using a $20 camera, I show you how to program your head / control unit for the rearview camera option, where to connect to power and video feed, and all the details of routing the cabling from the dash to your tailgate. The results are well worth the cost and time you'll spend, I promise.
If this video helps you with your GLK (or other NTG4.0 vehicle), please like the video, and subscribe to my channel. That will make it easier to spot future videos I do on the Mercedes (and other) vehicles, and will help me to be able to continue to produce videos to help the amateur wrench-twisters!
Thanks!