Left, the sign with no easy-removal-top. Right, the mods.
It is a work in progress. I have applied two coats of white paint and expect at least two more. Since I am using plywood, I have cracks and holes to fill. I’ve used wood filler and now, silicone sealant.
After painting, I will mount the two lights. With the lights off, it will be easier to put the sign in & out of the van, as well as charge the lights.