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N00b Question About 2nd Alternator (gm One Wire)


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Posted

im wanting to run a 2nd alternator on my car. im wanting to run a gm one wire alternator to a 2nd battery in the trunk used just for accessories. will a one wire be a good idea for just acccessories or will it overcharge/fry the battery?

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Posted

first off. are you wanting to run an alternator for you front battery to power your car and then a second alternator to power a separate isolated battery in the trunk?

don't do that.

just wire the battery's together and run both alts to the front battery.

will give you alot more total amps.

Posted
first off. are you wanting to run an alternator for you front battery to power your car and then a second alternator to power a separate isolated battery in the trunk?

don't do that.

just wire the battery's together and run both alts to the front battery.

will give you alot more total amps.

X2

Posted

alright, yeah thats what i WAS gonna do, can u explain a bit why its not a good idea?

and has anyone ran a gm one wire alternator as a 2nd alternator (in case it matters its not gonna be on a gm)

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Posted

It's better to have both batteries as you're adding more amp hours with the extra battery. As far as the GM 1 wire, it'll be fine. It works just like any other alt, except it only needs the one wire to an ignition source.

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Posted

so is it 'bad' to have the batteries separate, i figure it would be a good idea for when i wanna bump some music or something with the car off. that way even if i drain the battery i still have juice to start up the car and recharge it

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Posted

It's not so much that it's bad, it's just better to have them together for the extra benefit of more reserve.

2 - Audiopipe AP30001Ds

1 - Lanzar Opti Scion 600.4

4 - Lanzar Optidrive 1232D's

1 - Lanzar Opti 5.1

1 - Lanzar Opti 6.1

1 - Lanzar Opti 6C midbass

1 - Alphasonic PCT6551

1 - Lanzar VX830

1 - JBL 22 band EQ

1 - Lanzar SDBT75NU

1 - AudioControl Epic160

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