Re: Hooking up two batteries together on my 73 c10?????
I've always ran 2 batteries by hooking them up + to + and - to - . Now what MOST PEOPLE do from here is simply go directly to the starter and ground off of one battery only. Which is fine if you want to double your reserve capacity.
But if you want to DOUBLE your COLD CRANKING AMPS... Hook the 2 batteries up the same way as described above BUT go to the starter (+) off of one battery and ground (-) off of the other battery.
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