OK I don't have answers to the legality question but most tail lights
are red only so I would assume there wouldn't be a problem. The top would be the red tail light as most campers have then the bottom would be the turn and brake lights
correct? I don't have a UHaul so I'm not clear on that.
The fellow I'm making them for agreed to a solid red one as making a two color (amber/Red) lens would be over the top price wise unless he won the lottery. But yes they will be pricey even in solid red.
I'll need to get at least a $100 a pair plus shipping. I know that's gonna kill the idea for most everybody but these are going to be REALLY difficult to cast.
I think now I shouldn't have posted anything until I made his set to assess the quality and feasibility of making more. I don't want to sell anything that's not top quality. My apologies to all.