I did a search, nothing comes up with this topic.

So what is the cure for tail lights and head lights on Gen 1's getting moisture in them?
It is not coming around the bulb holders.

 

i once left me LS at the stealership (never a good idea) overnight while the timing belt job was done and when i went to take the car home there was a noticeable hole in the rear bumper (they agreed they ****ed up and put a new one on) and about a day later noticed the left headlight was getting moisture building up inside it. i couldn't figure out why until i looked real close and found the culprit which was a pretty decent sized crack in the plastic. about 99% sure the dealer did this too, probably at the same time as the hole in the bumper, but point of the story is i got a new headlight but still had to pay half, and those factory HIDs aren't cheap!

did anything hit your lights that could've cracked them? initially i tried to seal the crack with some silicone sealant but of course the crack spread and the moisture came back. if there is a crack i'm not sure much can be done besides get a new one, as is the way with too much these days

 

No holes, it is likely the seam, not just head lights but tail lights too. Have 2 that must leak around the key hole for trunk also.