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Home >> Ford >> 1983 >> Bronco 5.0 F, Automatic >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System - DURA-Spark III >> Testing >> Primary Circuit Continuity Check

Primary Circuit Continuity Check

  1. Carefully insert a small straight pin in Green ignition module wire. Connect negative voltmeter lead to engine ground and positive voltmeter lead to pin in Green wire.
  2. Turn ignition switch to "RUN" position, and measure voltage. Turn ignition switch "OFF", remove voltmeter and straight pin.
  3. If voltage was greater than 1.5 volts, proceed to "Ground Circuit Continuity Check". If voltage was 1.5 volts or less, proceed to "Ballast Resistor Check".
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