I got a lot of bad condensation after my body shop removed the light and put back improperly with the old gasket. I'm at the point of drilling it but before that I had sucessfully getting new gasket installed by myself and I make sure all the nuts are tight.
Some people don't realized that since there're 7 or 8 nuts there, as you tight one side, the other side got loosed. (Simimular to as you are tightening your wheels.) Anyway, I had the condensation that didn't get away throughly, I procceed to drive it, and 3 weeks later, all the condensation is gone, and I haven't seen them back since.
I do not recommend taking the taillights apart, you could try the center one to really see if you can handle that. (I did mine, removing the acura letter stickers). According to the others, the taillight is 5 times harder and you could break it beyond reparable. It's a $700 part, so beware. However, those liquid silicon that would "fill" up leak had work great and you don't need to take the taillight apart to fix.
So here's my suggestion:
1. buy new gasket.
2. seal the light all around the edge with those silicon as you take the lights out.
3. put everything back, shake the tail light and get the water out as much as possible, but you won't have any luck with hair dryer/heat gun... I tried. once the light is wet, you can only wait it evaporate out.
4. Put the light back and going thru all the nuts and bolts 3 to 4 times.
5. park your car under the Texas sun, let mother nature work for you. At times that you suspect will introduce water into the area(extended rain storm for weeks), leave it in the garage.
