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View Full Version : Alternator warning light on, but alternator charges...



Bad Bird
04-18-2010, 07:04 PM
Hi all,

I'm having a strange problem with my alternator. When the car starts, the alternator warning light stays on, albeit a little dimmer than before the car starts. However, when I put my digital multimeter across the battery, it shows 12.72V before starting the car and 14.07V when the car is running.

Clearly the alternator is charging the battery... so what could cause the warning lamp to stay on?

Cheers,
-Matt

67 455 Bird ragtop
04-19-2010, 04:07 AM
Type of car and alternator ??? Internal/external reg ??