Thread: 83 300D Alternator Exciter Wire Troubles
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Old 01-19-2017, 07:06 PM
SD Blue SD Blue is offline
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Join Date: Jun 2004
Location: West of Ft. Worth. TX
Posts: 4,186
How did O'Really's determine that the voltage regulator was bad? Was it removed and bench tested?

If it was checked on the car, was the DC voltage reading high? If so, then it is likely due to a failing diode and not the regulator.

A decent multimeter, measuring DC and AC voltage across the battery will tell you what is wrong with the alternator.
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84 300SD 350K+ miles ( Blue Belle )
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