http://www.stevemeadedesigns.com/board/topic/13280-how-to-do-the-big-3-tutorial/
you basically add on 0 gauge wires from alternator + to battery + and battery - to strut tower (or frame) and battery - to a good solid ground on the engine. i did it and i gained almost a half volt on my stock alt.
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Sound like a thing i could do, what if i just take the capacitorr, would i get moree than 12?