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Glowing Alternator light

  • 1979
  • 911 SC
83 000

1979 911sc after evaluation of non-charging issue, replaced original  external voltage regulator & Marchal alternator  with new Bosch external regulated unit, car holds a charge great ,charging 13 volts at idle. Problem with alternator light, when you start the car it goes on, after a few minutes at idle goes out, but when you rev the car light gets brighter as the revs go up. Any ideas? Thank you TonyG

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