Join Date: Apr 2011
Location: Brockville, Ontario
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sealing mast electrical connectors
Hi. New here. I have searched but not found quite this answer.
My wind instruments aren't working, but have been factory-checked, and I've checked each segment of the wiring with a digital multi-meter using its ohm-meter function. So I'm narrowing it down to probably the connectors.
My VHF radio works fine, and the nav lights work, but not the wind instruments.
I understand about using dielectric grease around the actual contacts (it's a resistor but the metal-to-metal contacts physically break through to each other if tight enough).
That leaves two things:
1/ how to seal the actual "seam" where two halves of a connector join, e.g. the male and female ends of a 4-prong connector. (I have used standard black electric tape. And there is a rubber sleeve which slides over that join, but whether that's enough to count on as waterproof I do not know.)
2/ How to seal the ends where the wires enter. I have tried "liquid electric tape", and physically it looks good, but is there some standard, known, better way to do that? If there's any little leak there, then the water would be trapped inside, and that would be bad.
The configuration is that the wind instruments have a connector which sits in the open breeze up atop the mast. That four-wire bundle travels down the mast and ends in another connector at the bottom of the mast. From there, another wire travels through a calked hole in the deck-step and on to the instruments, some distance away.
The inside of the mast of course gets wet.
So, I'll recheck all of the wiring this Spring, but how do I seal those connectors?
1981 US Yachts 33