I walked around my FLAGSTAFF trailer one day and noticed both of my 8-inch scare lights where half full of water inside. A closer look I noticed the LENS with a wep hole were installed wrong. The wep hole was on the top haha... Water was getting inside the trailer though the bulb socket position... When I re-positioned the lens I use RTV around the edge to seal better from moisture getting inside. Haven't seen any water inside the lens area since then...
I imagine alot of the lens covers already have a wep hole drilled into them...
Google Image
Roy Ken