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Home >> Mercury >> 1982 >> LN7 Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Ignition System >> MOTORCRAFT DURA-Spark II Ignition Systems >> Testing >> Resistance Wire Check
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Resistance Wire Check

  1. Disconnect control module 2-wire connector and remove coil connector from coil. Connect ohmmeter leads to "BATT" terminal of coil connector and to harness connector terminal mating with Red control module wire. Read ohmmeter, then reconnect all connectors.
  2. If resistance is 0.8-1.6 ohms, problem is either intermittent or not in ignition system. If resistance was less than 0.8 or more than 1.6 ohms, replace resistance wire.