configuration to connect the two batteries of a 1990 Isuzu Box truck

1990 ISUZU NPR
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DRJOEGADD
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Can you please advise the configuration to connect the two batteries of a 1990 Isuzu Box truck? Or what cables go were on the four posts? Thank you
Apr 18, 2013 at 9:05 PM
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ASEMASTER6371
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2 positives go together and 2 negatives go together.

that will give you 12 volts with double the amps

roy
Apr 19, 2013 at 2:33 AM