Art, I think you will find they are riveted on, you will have to drill out the two rivets in each
light, and when you put new ones back in, re-rivet.
be very careful if you have to pull down the roof liner, it tends to leave th foam backing stuck to the trailer, and dosen't re-glue very well.
use a 1/4 inch or thereabouts bit to drill the head of the rivet of in the
light fixture base, then remove the tail of the rivet from inside the trailer
Joe,