What is the best stuff to put in trailer light sockets to stop corrosion, and where can I get it?

I bought a set of LED tail/blinkers from Overton's. Supposed to be waterproof. I will posed results after install and dip.

I cant spell it,but it sounds like "dialectric" grease..
Napa or other auto store will have it
I use it in all my snow plow wiring,trailer connecters,lights ect.

I got the LED tail lights from Boaters World about a month ago...so far so good. No worry about vibration breaking filaments or hot bulbs in cold water. They are bright and totally sealed...life expectancy ...10 years. That's longer than I'll have my trailer.

To correct birdog, it's dielectric grease.
You can pick it up at any auto parts store. I use it on all my auto and marine bulb installations and on the spark plug wire boots at both ends.

Yea !!!! thats the stuff!!!!!!

Thanks Iggy.