Big 3 using postive jumper terminal

[ace_800 5,000+ posts]

So my Enclave's battery is behind the passenger seat not in the engine bay, but there is a positive jumper there. I figure that it is always connected to the postive of the battery wo would there be an issue running a 2ga from the alt to the jumper?

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[SourDeez 10+ year member]

I dont see how it could hurt

 

[keep_hope_alive Premium Member]

well, that's only half of the issue. the wire gauge of the factory wire from that post to the battery is also important if you're adding a system. you want to size that post-batt wire for whatever you want for power wire/draw. likely it's not much larger than 4awg.

i'd upgrade the wire from the post to the battery with 1/0 if you want to make a difference.