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Old 08-31-2020, 05:49 PM   #14
rotorwrench
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Join Date: Jun 2010
Location: San Antonio, Texas
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Default Re: over heated coil

There is only one resistor in an ignition coil. It's called the primary coil. They are manufactured in various different ohm specification for various applications and most applications are voltage related. A person can measure the amps it is drawing with a multi-meter. Ballasts are used to control current flow but should only be necessary when it is drawing too much current. The old Ford V8 coils had to have a 0.8 ohm ballast to control the current flow on them since they were sensitive to current in the Mallory design.
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