Actually I believe the coil is grounded in two places. First through the points when they close. The path goes through the distributor body to the engine block, then through a motor or transmission mount bolt or a strap to the frame then through another strap to the battery. Secondly the coil is grounded through the spark plugs when its field collapses. The outside body of the coil should not be carrying any current to the block.


1941 Chevy Master 3/4-Ton
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