All these are Alpine products to ensure compatibility. The camera (Alpine) is wide angle and as you can see fits very nicely in the license plate holder (Alpine). To the left and right of that holder are the plate lights. I built the harness myself.
As for the radio (Alpine), it has a "backup" functionality for the camera, however, if you look at the instrument panel, you will notice a toggle switch called "camera". I lie to the system to make it think I am in reverse. The camera then gives me rear view whenever I want it. There may be better location for the rear view functionality, but this suits me just fine.
I sourced my stuff from Crutchfield.