so every once in a while i notice a drop or two of water in the trunk but it isnt bad, so i let it go. well today i went to get the lug wrench out of the trunk as i got new hubcaps and had to take a few lug nuts off to get the old caps off, and when i opened the trunk, i got a river of water pouring out of the left taillight right into the trunk. talk about pissed! now i cannot figure it out. i read some previous threads of other years doing something similar, however how in the heck is the water getting in there when the rest of the trunk is just dry as dry can be?

thanks as always for y'alls help.

 

There is a foam seal behind the tail light unit, they get old and shrink.
You can get the gasket at the dealer, or use some type of RTV sealer around the top.
And here's an old used car dealer trick.....drill some 1/16" holes low down in the lenses, to let them drain.