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Re: Re: Confused on coil
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Posted by MikeH(Tx) on December 07, 1999 at 13:45:14 from (202.135.119.100):
In Reply to: Re: Confused on coil posted by IHank on December 07, 1999 at 13:09:54:
I'm not sure of this, so treat it as a question. Inside the coil are two windings of wire, with a common ground. Nothing is polarity sensitive. A direction the electrons are flowing across the sparkplugs doesn't matter to the gasoline. The reason to mark one plus and one minus is to make sure the common side gets grounded by the points. If the coil were installed backward, then the high voltage winding and the low voltage winding would be in series when the spark occurred and would lessen the spark voltage with extra resistance of the low voltage winding (only a little lessened). Therefore, if what I said is right, then for the Ford example, the plus side of the coil should always be grounded, no matter how the battery is connected, since that is really an indication of the common connection of the two windings and not a request for battery polarity. Is this right?
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