Posted by Bob on December 21, 2008 at 18:59:10 from (69.178.228.68):
In Reply to: Alternator High Charge posted by Kelly MT on December 21, 2008 at 17:34:46:
The terminal marked #2 on the alternator is "voltage sense". It may be jumpered over to the alternator's large output stud or run to a point more it's more near the battery to more accurately sense actual battery voltage.
If the wire to that terminal is not making good contact or is disconnected or broken, the alternator will default to charging about the voltage you are seeing... a Volt or two too high.
BEFORE condemning the internal regulator, check with a test light to see if there's battery voltage to the #2 terminal with the engine "OFF", then "ON". If there's battery voltage at the connector, be SURE the terminal is clean so it makes good contact. The regulator terminal is STEEL, and typically rusts, making for a poor contact.
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