Painted bottom of camper with driveway coating. Neighbor was having a yard sale. He gave me a whole gallon of water based drive way sealer. It was free. My 1st thought was to paint back of camper overhangs. Worked out well, dried hard, flat black and textured. Now I don't get any glare or reflections from the truck tail/brake lights. I also used it and painted the whole bottom of camper. Figured it couldnt hurt.
I had already removed bulbs from truck 3rd brake light-at night the whole truck cab would light up. More recently I added a switch to the interior dome light that turns 3rd brake light off.......Taking the bulb out works - remembering to put it back in didnt. Now its just a flick of the switch.