Whatever method you use to dry these out you will probably get water spots on the inside of the lights.
I had a dent in my trunk fixed. They had to remove the original tail lights to fix it. After they re-installed them, incorrectly, they washed the car and got water in the tail lights.
After removing them, I pored a small amount of distilled water into the light socket hole, rotate the socket counter-clockwise to remove it, and rinsed the inside several times. I used my wife's hair dryer to dry the inside of the lights. No water spots.
Three years ago I replaced the originals with Valentis. So far no leaks. If installed correctly and the bolts torqued to spec they should not leak.
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