I have my pool light out of its niche right now because it was filled with water and would trip the breaker. I need a new gasket for it. I have a quick question though. Is there supposed to be caulk or something around the wire where it goes out the back of the niche? I have my pool partially drained right now and can look back in there. The opening in the back of the niche where the wire goes through is larger than the wire and it appears that there should be some caulk or something to fill that gap. Thanks.