Cant find a diagram... First thing i would do is disconnect the battery, get some contact cleaner and clean the BCM connector, then check your grounds for the license lights. the camera/reverse thing might get fixed by doing this as well, if not loosen the 3 bolts holding the fusebox by the battery several turns, wiggle the box a bit and tighten down snugly ( like 10 Ft pounds) no more or you will snap a bolt. if reverse and camera failure happened at the same time it might possibly be the multifunction switch in the console shift lever, but lets rule out easy stuff before we start throwing parts at it.