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Big 3 Upgrade

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Old 09-25-2012, 05:25 PM
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Default Big 3 Upgrade

Anyone done this? I have 20ft of 1/0 guage wire sitting in my garage. Just need to know what to run it to and where to...
Old 09-25-2012, 05:38 PM
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Battery Neg (-) to Body Ground
Alternator Bracket to Body Ground
Alternator Bracket to battery Neg (-)
Alternator (+) to Battery (+)

i put a 300 amp fuse inline from alternator to battery (but i also upraded my alternator and am running dual batteries as well)

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Last edited by gadget799; 09-25-2012 at 07:04 PM.
Old 09-25-2012, 05:59 PM
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Thank you so much!
Old 09-25-2012, 06:48 PM
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Originally Posted by gadget799
Battery Neg (-) to Body Ground
Alternator Bracket to Body Ground
Alternator Bracket to battery Neg (-)
Alternator (+) to Battery (+)

i put a 300 amp inline from alternator to battery (but i also upraded my alternator and am running dual batteries as well)

<img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=370678"/><img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=370679"/><img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=370681"/><img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=370682"/><img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=370683"/>
Is it as simple as putting ring terminals on the wires and switching out the stock wiring? Or are modifications needed?
Old 09-25-2012, 06:59 PM
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do not need to remove the stock wires just install new wire right on top of the existing ones ..but any place you attach new ground wires like the alternator bracket be sure to sand the paint off before mounting
Old 10-15-2014, 09:28 AM
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Originally Posted by gadget799
do not need to remove the stock wires just install new wire right on top of the existing ones ..but any place you attach new ground wires like the alternator bracket be sure to sand the paint off before mounting
Would there be any harm in removing the stock wires and just having the Big 3 ?
Just curious.....as may do this myself but don't see the point in keeping the stock unless it's considerd necessary as a backup



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