I needed a bracket to mount my backup camera to the back of my camper. This is designed to fit over the existing center light with the cover removed. You can then mount a replacement center light to the outside of the bracket. It uses the screws that hold the existing light to hold both the bracket and replacement light.

For power, I spliced into the light circuit so to power on the camera I just turn on the headlights on my truck. 
 

I don’t remember what camera I have but it should work with a variety of different ones. Once everything was mounted, I sealed around all the edges to prevent water intrusion although this was designed so that I didn’t need to drill any holes.

Printed in 3D Solutech PLA with supports. I will see how long it lasts since my camper is Stored outside and this was printed in PLA.