Originally Posted by Phil Fill
We have one of those for the 2 winches for the mst and boom to disconnect the remote wire contolls. It was there when we bought the boat 17 years ago. Each year I take a old/used nail file to the metal connectors.
When I had a trailer boat, I used a pair of those for the electric winch. Dielectric grease will go a long way towards retarding corrosion.