airborneXX Posted November 25, 2006 Share Posted November 25, 2006 When out on my uncles boat last week the depth finder was intermittently reading high voltage. So I switched it over to give us the voltage reading. While running the voltage would run 13.5 to 14 volts. Every couple of minutes it would spike to 17.5-18 volts. At 18 volts the depth finder would flash high voltage. Then it would drop back to normal. Boat is a 95 22' Mako center console with a 95 200 hp Mercury outboard Any thoughts, besides the hull being cupped :icon_think: Quote Link to comment Share on other sites More sharing options...
Iceman_40 Posted November 25, 2006 Share Posted November 25, 2006 Not much of a marine guy but I wouldn't trust the voltage gauge on the depth finder. Get a Multimeter to confirm the voltage spikes or real voltage gauge installed and confirm it's accuate. Quote Link to comment Share on other sites More sharing options...
airborneXX Posted November 25, 2006 Author Share Posted November 25, 2006 Not much of a marine guy but I wouldn't trust the voltage gauge on the depth finder. Get a Multimeter to confirm the voltage spikes or real voltage gauge installed and confirm it's accuate. You are correct as I don't really trust the depthfinder at depth finding either I'm going to bring my VOM and clip cords with me on the next trip out. The boat's going to be coming here for a little while for other repairs when we pull it out next month. So I'm trying to get "to do" list together so we don't have any surprises in the spring. Quote Link to comment Share on other sites More sharing options...
redxxrdr Posted November 25, 2006 Share Posted November 25, 2006 I assume the boat has a alternator instead of generator. You can easily get 120VAC from a alternator. I had a cutout relay on one of my trucks so I could run drills and hedge clippers off of it. If you are really getting spikes, then the regulator is going. Better to know this at the dock. Quote Link to comment Share on other sites More sharing options...
SGT Ski Posted November 25, 2006 Share Posted November 25, 2006 plus one for cofirming with a volt meter and it probably being a voltage regulator also check the connections as they can become corrodided pretty easy Quote Link to comment Share on other sites More sharing options...
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