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Old 09-19-2021, 11:43 AM   #1
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Auxiliary power supply for rv

Our rv didn't come with a battery turn off switch and looking to find an auxiliary backup power supply or an OEM cutoff switch to install.
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Old 09-19-2021, 01:49 PM   #2
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Always best to post the year, model and make of your RV and tow vehicle for best advice.


I went on Amazon but a lot of places sell cut off switches the run from simple to expensive. I went for a rotary switch which failed after a few uses and now have on like this one for $6.99. I simply unscrew it part way and no connection. Or take the knob off and leave it on the battery.

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Old 09-19-2021, 01:52 PM   #3
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We have a 2019 Jayflight 29BHDB and have a 2018 RAM 2500. Thanks and we'll look into that.
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Old 09-19-2021, 02:30 PM   #4
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My battery has a screw terminal so I used a slightly different version of the switch above. Works like a champ. Got from Amazon.

It says it is for a side post battery but my screw terminal was on the top.
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Old 09-19-2021, 03:23 PM   #5
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Thanks
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Old 09-19-2021, 03:25 PM   #6
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Our battery is the blue Optima.
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