There is an adhesive that goes around the light itself on the inside. I saw some for sale in my new Victoria British cataloge, but I don't know where else you can find it. AZ or Spot would know for sure.

 

Oh boy. You're going to hate this but....

Take the taillight out of the car. Very carefully pry the old plastic lens off. Be very careful because if you break it, you're going to have to buy a new one. Once you have it off, use a good superglue and don't miss a spot. A gel glue would be best. Then very carefully put the lens back on the housing. Scrape all the old goop off the body and use new stuff to seal the tail lights to the car.

 

If you glue the lense do not use superglue. In a very short period of time it will fail again. Some sort of expoxy would make more sense.

 

Try 3M 4200 adheasive/sealant. It's made for boat and can be used below the water line. DO NOT USE 5200, you will NEVER get those tail lights off. Even with 4200 you might not want to seal the light to the body with it.

Mike

 

Did mine with it 7 or 8 years ago. Still have no leaks. Still haven't fallen off.

 

Should only have to fix something once. Over time superglue dries out and fails. Just because it worked in your case doesnt make it a good choice for fixing plastic-- in the long run.