So a few weeks ago I noticed condensation in my driver side tail.....today I noticed a ton of condensation in my drive side tail of my Mazda 3....wtf. my truck tail has yet to dry out, but I get a lot of rain here. Any suggestions for both vehicles? I don't want to drill any holes into housings as I've seen recommended.

 

You either have a crack in the lens or a bad seal around the bulb hole...

 

There are sometime drain holes.