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Running Dual batteries question.


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What would be the difference in wiring two batteries in parallel vs wiring both batteries to the power pole of a alternator? Provided both batteries are the same with same wiring.

Alt + to Front Batt +

Front Batt + to Rear Batt +

or

Alt + to Front Batt +

Alt + to Rear Batt +

What's the difference if any?

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None really. Some like to run from the alt to the rear batteries. Im not one. You may also have a tough time getting two runs on the positice stuff of an alternator

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Mine goes from alt straight to the rear. No problem getting.. Lets count... 1..2.... 6 wires on mine :)

Stock wire, positive to battery, wire to regulator, 3 runs to the rear.

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Alt is where the power is coming from. So I go straight from there

And on my car, easiest place I found to run wire was on the passenger side. Battery is on the drivers side. I'd go from alt, to driver's side for the battery, back over to the passenger side. It would have been a waste of wire.

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Alt is where the power is coming from. So I go straight from there

And on my car, easiest place I found to run wire was on the passenger side. Battery is on the drivers side. I'd go from alt, to driver's side for the battery, back over to the passenger side. It would have been a waste of wire.

My setup is same. Alternator closer to passenger side. Battery across the way.

Ok, so next question:

This wouldn't be ideal if the rear battery was a smaller reserve battery would it? D925 in the rear.

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I know mechman doesn't recommend running multiple wires from the alt. Talk with them about it.

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I know mechman doesn't recommend running multiple wires from the alt. Talk with them about it.

^^ I've also read that in some other threads on here.

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