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Secondary Wire Resistance

  1. Remove distributor cap and disconnect spark plug end of suspected wire(s). Connect ohmmeter leads from terminal inside distributor cap to end of spark plug wire. DO NOT  puncture spark plug wire when measuring resistance.
  2. If resistance is below 7000 ohms per foot, spark plug wire is okay. If resistance is over 7000 ohms per foot, replace wire(s). After test, install distributor cap and connect spark plug wire(s).
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