Good morning,
The alternator has an internal regulator. When that fails, it overcharges and will destroy the battery with it.
https://www.2carpros.com/articles/how-to-replace-an-alternator
I attached a diagram for you to view. Can you give me the voltage reading at the battery when it is running?
https://www.2carpros.com/articles/how-to-check-a-car-alternator
How do you know there were 3 wires on the connector? There are only 2 wires on the 1 connector and then there is the wire from the battery.
Can you post a picture of what you see?
Roy
REMOVAL
1. Disconnect the battery ground cable.
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2. Remove the engine cover.
1 Remove the screw.
2 Push the cover forward to disengage the front clips, then lift the engine cover straight up.
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3. Remove the pushpins and the wiring harness.
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4. Remove the four bolts and the generator bracket.
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5. Disconnect the electrical connectors.
6. Release the belt tension.
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7. Release the belt from the generator (GEN).
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8. Remove the generator.
1 Loosen the bolts.
2 Pull the generator straight up to remove.
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Wednesday, January 22nd, 2020 AT 6:38 AM