Big three ??

[Cadillac_02 10+ year member]

What if my battery is under my back seat???

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[Falcons 5,000+ posts]

then you need to buy longer wire.

 

[Below20hzonly 10+ year member]

do it the same way

 

[TheUnderFighter 10+ year member]

You just gotta have a way longer run. Unless that wire is already of an adequate size, like 2 gauge. If it's only 4 gauge, you could probably get away with just adding another run of 4 gauge. Anything less and you should definitely do 1/0. If there's any possibility of you buying a bigger alternator in the future, just do 1/0 now.