Also check you ground (negative) wires if they have any. Make sure your Battery connectors are tight.
My trim Gauge quit working 2 years ago, last year it starting working fine, then quit again. I know I have a loose wire SOMEWHERE, just a matter of finding it.
Saltwater and electrical connections don't mix well. Take the extra step to tape or liquid tape or silicon over all exposed electrical connectors. Heat Shrink is great too, just remember to put it on before the connection is made with a stake-on connector. bngh I know you have all done that! Also try to keep all your wires that are in the bilge as high as possible and use marine grade wire. It cost more but lasts a long time. I just spent $150 bucks on marine wire. And I had the the same non-marine, household wire in my garage. I Just don't want to do the the same wiring job again in a couple of years.
Marine grade wire also has more strands than regular wire reducing the resistance of the wire. There is an ebay store selling wire relatively cheap. (greg17474) Just bought 100' of 6 awg for .99 cents a foot. boaters world wanted 3.50 a foot. and the wire meets marine specs.
wiring for the new windlass have to go from port,stern of the boat around to starboard up to cockpit back out and up starboard side to the bow. positve and negative 50' each.
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