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Old 11-19-2022, 08:22 PM   #21
nkaminar
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Join Date: Jan 2012
Location: Western North Carolina
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Default Re: Basic Question-Jumper machine

Well, there is one case where you would want to hook plus to negative and that is if you are wiring the batteries in series. (Or battery and Jumper Machine in series.) This is sometimes needed if it is 40 below and you are trying to start your Diesel truck with 24 volts.
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