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

CUSTOMER

MEMBER
2005 FORD EXPEDITION
3.8L
V8
4WD
AUTOMATIC
200,000 MILES

Internal voltage regulator.

Wednesday, September 15th, 2021 AT 1:32 PM

5 Replies

SQM

MECHANIC
6,383 POSTS

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

CUSTOMER

MEMBER
3 POSTS

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

CUSTOMER

MEMBER
3 POSTS
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)

ASEMASTER6371

MECHANIC
52,796 POSTS

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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