I picked up some USGI trailer lights last weekend. I got the housing for both right and left sides of the trailer, plus a blackout light for looks. I disassembled them last night to take the guts out. One was east as hell and had no problems... The other one had two screws actually come out, the rest sheared off in the housing. I have a lot of broken screws to extract. Luckily I also bought new in the wrapper lens plates when I bought the lights.
all I need now is LED lights to put in them, as well as the mounting brackets themselves.