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Boat drawing power with ignition off


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After my first outting this year, I noticed my depth finder and hour meter were still on with the ignition in the off position. Battery is dead in couple days. Didn't have this problem the last 2 years I've had my boat. Malibu dealer told me to add a battery On/Off switch which would work, but I prefer to fix the root cause of the problem.

1999 Sunsetter LX

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After my first outting this year, I noticed my depth finder and hour meter were still on with the ignition in the off position. Battery is dead in couple days. Didn't have this problem the last 2 years I've had my boat. Malibu dealer told me to add a battery On/Off switch which would work, but I prefer to fix the root cause of the problem.

1999 Sunsetter LX

A wild guess, but does your boat share a relay for these two items? Could be not in the permanently latched on position now?

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Have you changed any wiring in your boat in the last two years? Sounds like the depth finder and hour meter are wired to a constant 12V supply rather than a a 12V "key on" supply.

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Nothing has changed. The hour meter is in my Tach. Do you think the Marina could have accidentally done something when they winterized my boat?

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It's possible your ignition switch is going bad. Possible corrosion or just failure from use over the years may have worn the switch to the point were it may be able to carry some current when it's in the off position. Try a new switch. It's a pretty simple DIY job, probably take about an hour.

I also recommend a battery on/off switch -- just a little piece of mind and easy to install.

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Only 170 hours on my boat, so I would think the ignition switch is okay. Although things can just as easily go bad over time with little to no use. Any suggestion on how to check the ignition switch?

Battery on/off switch does sound like a good idea which I'm planning to add. Any suggestions on a brand/model?

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Only 170 hours on my boat, so I would think the ignition switch is okay. Although things can just as easily go bad over time with little to no use. Any suggestion on how to check the ignition switch?

Battery on/off switch does sound like a good idea which I'm planning to add. Any suggestions on a brand/model?

This one is quality: http://bluesea.com/category/4/14/products/9003e

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Only 170 hours on my boat, so I would think the ignition switch is okay. Although things can just as easily go bad over time with little to no use. Any suggestion on how to check the ignition switch?

Battery on/off switch does sound like a good idea which I'm planning to add. Any suggestions on a brand/model?

Either crawl under the dash to access the back of the switch, or just pull it out of the dash. Determine if you have a 3 or 4 position ignition switch (probably 3 position), then use this website to determine which terminal is which.

http://www.boatfix.com/how/switch.html

You should see voltage in the START position. If you see any voltage in the OFF position, your switch may be worn out/corroded and causing the slow battery drain.

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