After removing the tailgate skin (simple removal with a handful of screws), I ran the camera wire inside the tailgate, then over to the rear left side of the tub. Up and over the rear left axle, and then I followed the main wiring loom on that side that runs along the left side underneath the...
I mounted mine centred in the tailgate handle… gives me a raised and unobstructed view of what’s behind me compared to plate or lower level mounting, and looks factory (to a point). Has never got in the way, and as I have a load lid with bike racks on it, I never lose the view when the bikes are on.