Just keep the water inside and try to fill up the whole taillight with water. After you do that put a few goldfishes in there and watch them swim through the clear altezza glass. :laughing:rssex29 said:There is a lot of water condesation in my new taillights. Anyone know how to fix it? Im thinking of taking them off and checking the seal, but there still might be water trapped inside. Im sure alot of people have this problem. Can someone help me out?