OK a couple of tiny updates.
Added a cell booster antenna. Will see how that works.
Added a handle to the bed, much easier to lift!
And worked on a backup camera. Huge fail so far.... Its wifi based and I had an old phone I was going to use for the screen. The idea os good, but the transmitter that claims 150m, is more like two. Too much metal I guess, as soon as I walk around the side of the truck it just drops.
Parts
Stuck it all in a tupperware on the back of this panel, tapped the license plate light for power.
It works if you stand behind the truck..... not so helpful. I may **** with it later, or just get something different.