Battery drain

2000 CADILLAC DEVILLE
110,000 MILES • 3.2L • V8 • AUTOMATIC
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BRENDA DANUK-MURPHY
  • MEMBER
  • 1 POST
I replaced PCM, battery and alternator. Drove to AutoZone and back car was dead in morning. I have three wires red orange and yellow/gray I’m not sure what order they go in for alternator plug. can’t find a diagram anywhere.
Nov 21, 2021 at 3:30 PM
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SQM
  • ✓Experienced Mechanic
  • 6,383 POSTS
Hello,

So just to clarify, the alternator is not charging the battery? Did the battery light stay on during your drive home?

https://www.2carpros.com/articles/how-to-check-a-car-alternator

I have attached the pinout and the wiring diagram below.
It shows the color and the orientation of each wire.

Please let me know of any questions.
Thank you.
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Nov 22, 2021 at 12:26 AM
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