If you have conventional brass base bulbs like those in our 2011 Sunseeker, you may want to add some sealer around the lenses. The fixtures have no seals. Some have reported water getting into the fixtures. Once, water got into 3 of the 4 on ours while driving in heavy rain and the water shattered the bulbs. Oddly, this only happened once even though we have driven in the rain many times. After having the bulbs shatter, I ran a small bead of black RTV around the top and sides of the base, let it set a few minutes to skin over, then put the lens back on. The RTV doesn't stick to both, so I could easily remove the lenses later. I didn't put RTV on the bottom so it wouldn't prevent condensation from draining. Some stated they just used Vaseline.
2011 Sunseeker 3100
1997 Pathfinder Toad