Sounds like my tail lights. There is no rubber boot. The tear drop portion on mine has 2 small screws that are in the upper and lower corners, above and below the fat part of the teardrop. These screw directly into the trailer. I have seen replacement teardrop assemblies in the store, but my light and wires are mounted directly to the trailer so these "kits" do not work. I am able to change the bulb with no problems however once removing the teardrop.