Quote:
Originally Posted by Tom Wesenberg
The points is what completes the ground side of the coil circuit. If the head distributor hole is rusty or the distributor lower housing has paint or rust, then it may not make a good ground.
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Thanks Tom,
Also many heads have paint on them so that head nuts do not make a good electrical contact to the studs.
My car has had an extra ground from frame to block since the early 60's.