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Alternator Indicator

  1. Alternator light should be on when ignition is on and engine stopped. If light is on with ignition off, disconnect leads from alternator terminals No. 1 and 2. If light stays on, leads are shorted. If light goes out, see DELCO-REMY ALTERNATORS & GENERATORS article in ELECTRICAL section.
  2. If light does not come on with ignition on and engine stopped, check bulb and power circuit to bulb. If no problems are found, check bulb ground circuit.
  3. If light stays on with engine running, check charging system, see DELCO-REMY ALTERNATORS & GENERATORS article in ELECTRICAL section. If charging system is okay, check bulb circuit for short to power.