12 SI Alternator, 78 or 100 Amp?

rdakota340 said

I would run a 4 or 6 gauge I'm running 4 on my 136 AMP 03 hemi alt. I discontinued my amp gauge and the wire is running right to the battery cable on an external solenoid.

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Maybe I misunderstood. I thought the OP was referring to the feed into the interior.

But for the charging line from a (100A) to the battery, at least no6 especially if it's got a "one wire" regulator in.