Internal voltage regulator what does the " I " and " A " pins connect to?

Tiny
CUSTOMER
  • MEMBER
  • 2005 FORD EXPEDITION
  • 3.8L
  • V8
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
Internal voltage regulator.
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Wednesday, September 15th, 2021 AT 1:32 PM

5 Replies

Tiny
SQM
  • EXPERT
Hello,

The 'I' pin is the alternator sense circuit, voltage supply at all times, and the 'A' pin is alternator monitor.

Couple of helpful articles on wiring:

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

I have attached the wiring schematics of the charting system as well as the alternator replacement procedure your reference.

Please let me know of any questions.
Thank you.
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Wednesday, September 15th, 2021 AT 10:34 PM
Tiny
CUSTOMER
  • MEMBER
Sir/ Madam,

Based on your response, The "I" pin connects to positive power on the battery and the "A" pin would connect to Negative ground through a gage or light or a diode.
Is that correct?
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Thursday, September 16th, 2021 AT 6:28 AM
Tiny
CUSTOMER
  • MEMBER
  • 2005 LINCOLN NAVIGATOR
  • 200,000 MILES
I only have 2 wire "A " and " I " (marking on connector).
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Thursday, September 16th, 2021 AT 12:03 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
Good evening,

I attached the wiring diagram of the charging system for you as well as the connector diagram with the location of the wires for you.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Let me know if you have any other questions.

Roy
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Thursday, September 16th, 2021 AT 12:03 PM (Merged)
Tiny
SQM
  • EXPERT
Yes, that is correct.
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Saturday, September 18th, 2021 AT 9:33 PM

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