Have these two tail lights for my trailer, but I didn't take them off before the restoration so I'm not sure how they are screwed. I see two different sized holes in the lens, and slightly different patterns in the base. It looks like the larger holes align with the dipped holes in the base and they attach the base to the trailer side. Then, the narrower holes use shorter screws (machine screws probably) to attach the lens to the base. Is this correct? Anyone can confirm? Thanks!
small holes are the mounting holes and the larger hole is a guide pin hole or weep hole for moisture.