Replacing lights on trailer what to seal with

Well, if you are replacing the entire light fixture, you do need to seal it to the side of the trailer, and I have used that "Plas-T-Cote" puddy.. Similar to Plumber Puddy as best I can describe.

It's used for roof vents, but I used it on running lights and rear tail lights when I had to replace the entire thing over the years.. I am still using the same roll I bought 10 years ago.. It's still malleable and seals just fine.

If you are just replacing the lenses, then you don't want to seal that, as mentioned above.

Good luck!

Mitch

donn0128 wrote:
Nothing. The lens is a snap on and it needs some opening to allow condensation to drain out. If your really worried, snap then off each spring, clean with a rag or paper towel and snap back on.
Be sure to seal between the light and trailer body.

X2. Your only going to have problems if you try to seal them entirely. When they eventually do get a little moisture in them its just going to go inside the wall.
In our case Forest river put just a small amount of sealant across the top of the lens - which seems to work OK.

Nothing. The lens is a snap on and it needs some opening to allow condensation to drain out. If your really worried, snap then off each spring, clean with a rag or paper towel and snap back on.
Be sure to seal between the light and trailer body.