i just finished washing my car today and found out that my tail lights are full of water! i've read all the threads and stuff, but i was wondering if a recent rear end accident could have been the problem. i was hit lower than the lights, but i definitely didn't have this before.

 

remove, get a new gasket, empty all of the water out/blowdry it, install new gasket, enjoy.
if that doesn't fix it, coat the gasket in clear 100% silicone, reinstall.
working out the kinks between you and your car will ensure for a happy relationship.

 

sweet thanks!!