11-28-2009, 11:40 AM
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CC Member
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Join Date: Feb 2008
Location: Jacksonville,
FL
Cobra Make, Engine: Kirkham #570 w Shelby FE
Posts: 1,009
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Not Ranked
The ground (case) for the coil is only tied to the secondary winding (spark) side, so a 16 or 18ga wire would be fine. The majority of the resistance in the secondary circuit is the plug wires and plugs themselves, so you don't need a very large conductor (high voltage/low current).
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