On May 3, 10:02*am, Wayne B wrote:
On Thu, 03 May 2012 08:12:56 -0400, wrote:
Where nothing else will do, there is nothing as effective as silicone
grease in excluding moisture from bulbs and other semi-exposed
electrical contacts.

====

I'll second the motion regarding silicone (dielectric) grease. *I've
started using it on just about everything, even dipping wire ends in
it before crimping them. * You can buy a good sized tube of it at NAPA
for about $3 which makes it a real bargain.

Sounds like your switch may have to be labeled "under sail" and "under
power!"

The last of my old sailboats had 3 switches, one for the masthead
tri-color, the original for the deck mounted lights, and the third was
for the mast mounted steaming light.

I know others disagree with me but I solder and then heat shrink
connections that have corrosion potential. But then the wire needs to
be well secured. The solder makes that part of the wire rigid and if
it flexes somewhere nearby it may eventually break at the end of the
solder joint.