Hi,
First, I need you to confirm the alternator isn't charging. All you will need is a voltmeter or a multimeter. Do this so we can eliminate any issues with the instrument cluster display module. Follow the directions in this link and let me know the results:
https://www.2carpros.com/articles/how-to-check-a-car-alternator
If the alternator proves not to be charging, I next need you to locate the red wire on the alternator connector. That wire should have 12v at all times. Check that to confirm.
I attached the charging system wiring schematic below, so you have a reference. Also, here is a link you may find helpful:
https://www.2carpros.com/articles/how-to-check-wiring
Let me know what you find.
Take care,
Joe
See pic below.
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Thursday, June 2nd, 2022 AT 7:36 PM