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Old 04-08-2024, 09:35 PM   #1
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Battery Jayco 174BH

Need some advice. Is there a button to enable /engage battery for jayco 174bh? Iíve tried turning the disconnect on and off and canít get the battery to power anything inside the unit. AC/TOW connections work. Feel like Iím missing a button to engage battery. The battery is charged with 13.8v .Thanks
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Old 04-09-2024, 06:32 AM   #2
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Welcome to the Forum from Western New York State!

The first things I'd check for is a blown fuse. There should be one inline to the battery in a weatherproof holder. The top of it will pop off to expose the fuse. The next ones will be in your converter. There should be two reverse polarity main fuses that will blow if you try to connect the battery cables backwards.

If all those are still good, then I'd check for good ground connections from the battery back.
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Old 04-09-2024, 06:53 PM   #3
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Could be as simple as a bad/corroded/loose connection at the battery, fuze, or anywhere along the line. Did you check the voltage at the battery posts. Should be above 12 volts with a multimeter.

Could also be a bad connection at the frame ground.

When plugged in the voltage to the battery should be 13 or more indicating the charging system is working .

An inexpensive multimeter is an RVing must!
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Old 04-09-2024, 08:08 PM   #4
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Thank you for the replies. After troubleshooting with a meter, I found the disconnect switch had failed. I bypassed it with a jumper for testing and success. I have battery power. Ordered new switch. Thanks for the support!
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Old 04-10-2024, 05:15 AM   #5
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Glad you found the culprit. Multimeters are really a necessity to have for electrical gremlins.
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