I know this is a very old thread, but if you see this, did you get a new light or leave the old one.
I had my own question about installing a new liner with the same kind of light. Do lights have to be removed to install a new liner? I have the nicheless Aqualumin but I cannot remove the light because I don't know where the junction box is. I have searched and searched, but I'm convinced it is buried in the concrete. The light can be unscrewed and placed on the deck but the cord will still be in the wall. I just wanted to make sure that wouldn't affect a new liner install.