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Is my alternator considered to be a two wire or three wire alternator?

Tiny
CADE BROWN
  • MEMBER
  • 1992 NISSAN HARDBODY
  • 2.4L
  • 4 CYL
  • 2WD
  • MANUAL
  • 999,999 MILES
Which wire is the exciter wire, and which is the voltage sensing?
Wednesday, August 2nd, 2023 AT 9:35 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,959 POSTS
The yel/blk wire is the sensing wire here is the alternator wiring diagrams so you can see how the system works. Yours is a three wire sensor. Check out the images (below). Please let us know what happens.
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Thursday, August 3rd, 2023 AT 12:16 PM
Tiny
CADE BROWN
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This isn't how my alternator is set up, mine has the wire that goes to the battery and a plug with two wires ran out of it. I need to know what each wire that comes from the plug are one is the sensing and the other is the exciter on the diagram shown the exciter is the ground wire.
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Thursday, August 3rd, 2023 AT 12:24 PM
Tiny
KEN L
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I found this wiring diagrams it might be better. There is the sensing wire is the charge indicator wire.
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Friday, August 4th, 2023 AT 10:13 AM

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