Discussion:
Wiring on alternator

I am trying to help a friend of mine who has an old Nissan Forklift. The model listed on data plate is PHO2A25V.
I had the alternator tested at NAPA today and its charging. It is a 40 amp alternator.

The two wires that are cut is close to back of where a connector should plug in. One wire is a solid white wire. It has 12 volts all the time. Looks to be maybe 16 gauge wire ? I think that one should go to the sense terminal on back of alternator but not sure ?

Other one is white with red stripe. It has no power on it with or without key turned on. I believe that wire one would go to the L terminal but would need battery voltage when key is turned on ? I just need to find why no power with key on. Am I on the right track in thinking this ?
It also is grounded on the E terminal.

Thanks for any help. Mr Dillan
  • Posted 30 Oct 2024 11:32
  • Modified 1 Nov 2024 09:44 by poster
  • By mrdillan
  • joined 30 Oct'24 - 2 messages
  • Alabama, United States
Showing items 1 - 1 of 1 results.
Its fixed.
Under the dash I found a fuse missing that fed the exciter wire. Replaced with a 10 amp and wired white with red stripe to L terminal on back of alternator. That wire is now showing 11.5 volts when I turn the key on. Solid white wire has 12.6 volts all the time and I connected it to the sense terminal. Its now charging 14.5 volts. All is good.
  • Posted 1 Nov 2024 09:41
  • By mrdillan
  • joined 30 Oct'24 - 2 messages
  • Alabama, United States

Post your Reply

Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.

If you are having trouble using the Discussion Forums, please contact us for help.

Upcoming in the editorial calendar
MANAGING MIXED FLEETS
Oct 2025
ASSET FINANCE
Nov 2025
Airman ENCL045
Yokohama, Japan
Used - Sale
Aichi SR10C1SM
Yokohama, Japan
Used - Sale
Upcoming in the editorial calendar
MANAGING MIXED FLEETS
Oct 2025
ASSET FINANCE
Nov 2025
Airman ENCL045
Yokohama, Japan
Used - Sale
Aichi SR10C1SM
Yokohama, Japan
Used - Sale
Latest job alerts …
Danville, IL, United States
Movers & Shakers
Andries Retief Andries Retief
Chief development officer, DHL
Director, ICHCA Australia
CEO, TVH
Sales and operations director, Logitrans A/S