One thing I like to do is get some stainless steel bolts (usually 1/4-20 1 1/4") and weld them to the steel frame near where all the lights and brakes are going to be plus one near the tongue. They make for a ground that will never fail. I do run ground wires as well but having grounding studs that will never rust makes for an easier install and trubleshooting down the road.
Looks better than a factory bought one. I bet the paint will last longer than those. Great Job.Ive been building trailers (light) for years but all I ever had was used and discarded metal. I always wanted to be able to see what one of mine would have looked like if I had the materials.
Im wondering on the lights? LED? and how they should old up to the bouncing and jarring. ?
Again Great Job..