Inspect the yellow lenses carefully.....can get hit by rock and a small crack can allow water to penetrate. I caught mine early (always looking for water up there) and found two lenses were cracked from age and/or rock hitting'em. Replaced and sealed and no water. Also have thought about just removing and caulking over, but, ordered new LED's and replacing with lots of good fresh caulk to seal'em up tight (but always need to keep rechecking in the future for above-mentioned items). If I get too old to climb the outside ladder, I'll have someone else inspect or just completely remove and seal it off.