Mark we live a couple of blocks from the beach here in south Florida and I've never had any issues with corrosion *inside* of the house on any of my terminals or connects but on our agricultural spray planes which are subjected to numerous corrosives including tons upon tons of dry fertilizer during the hot humid summer months we use a Dielectric grease on all of the electrical connects and Cannon plugs with good results.

Dielectric Grease

Rick
Our Room

smile