Farmall H 12 Volt Alternator

John Melick · Jan 1, 2010

Happy New Year.
Can anybody provide a part # etc. for a 12V alternator that will fit beneath the sheet metal of an H.
The generator Dia. is less than 5".
Thanks for any help.
JM

Dave S. · Jan 1, 2010

Hitachi #14231 used on 1980 Nissan 720 pickup.
NAPA #2138130

Icuby · Jan 1, 2010

Dave.S is right,easy to mount and wire.

henryv1111 · Jan 1, 2010

Is that a 1 wire alternator?

Farmallhal · Jan 1, 2010

When I converted my 1951 H to 12V using the Hitachi 14231 alternator I wired it using Bob Melville's wiring diagrams which are available on this site. I used the three wires as it was intended to be wired on it's automotive application. The difference on my alternator was the terminal labels. The L is the same as 1 on Bob's diagram and the S is the same as 2 and the Bat is the same for both. It was simple to wire that way and I believe I've seens other posts here on the forum from folks who wired it as a one wire as well. If that is the route you want to go then check the archives for that information. This alternator makes a nice and simple conversion on a H which fits nicely and still has adjustment room between the valve cover and hood. Hope this helps, Hal.

Janicholson · Jan 1, 2010

Do as FarmallHal indicates. 3 wire is super easy and not at all harder than plugging in a toaster.
JimN

Farmall H 12 Volt Alternator

John Melick

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Dave S.

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Icuby

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henryv1111

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Farmallhal

Well-known Member

Janicholson

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