Even well-made splices in wiring can wick up moisture, especially if they are in a boat’s bilge. Wicking, of course, can cause corrosion, prematurely ruin a splice, and cause electrical issues. To prevent this sort of thing, I suggest adding a drop or two of oil to a splice before you crimp, heat-shrink, or otherwise seal it. The oil will block salt moisture from entering and will keep the splice like new.
Illustration by Steve Karp
This article originally appeared in the September 2011 issue of Power & Motoryacht magazine.