Hi Russ, have a look at ACF50, it is an anti corrosion oil so may be a bit tacky but can be used on any surface including electrical connections, I have been using it for years on my motor bike and I do not worry if it gets sprayed on the electrical components, like you I live near the sea but have never any corrosion issues since using it, apparently it was developed for the US air force to stop thier planes corroding so must be good stuff. Must admit it never crossed my mind but I think I will coat the vulnerable components with it myself.
Dave_Kentsbeer