(800) 853-2651
SHOP NOW

how to change a farmall h from 6 volt to 12

Yep, don't.

An H will spin over plenty fast on 6, no reason to switch to 12.

But if you wanted to go cheap, get magneto ignition, throw a 12 volt battery on it for starting, charge a couple times a month or so.
 
The content in this set of diagrams is from Bob M. This is as reliable and simple as possible. Do not go with a "one wire setup".
The reality is that it does not need 12v. A use of 00gauge bat cables, and a good battery will make it crank like it should. JimN
Bob Ms Superlative Wiring diagrams
 
Its pretty easy accept getting the most common and I think easist to use alt. the delco 10si under the hood and still have room to swing it over to tighten your belt . I read on here about using a smaller case alt. off a datsun car but I havent done on that way I built a idler arm to tighten the belt after that you need a12v battery a resister to put in the power wire to the coil change all lamps to 12v if your going to use lights also switch battery cables to neg ground dont need to do anything with the starter there will be a little fab work on the gen. mounts to get alt. in whole thing if you do it yourself 150-200bucks and a evening in the shop maybe less also put a diode harness on the alt. to keep from back feeding your ingnition ( tractor wont shut off sometimes if you dont under 10$ at auto supply store
 
Find a good automotive electric repair shop & have them convert the H's generator over to 12v, it can even be changed to neg. ground if you want. I have had a couple generators off of an M & a SMTA done this way. Wasn't expensive, guy didn't charge me for one & $35 for the other one. The one he charged for needed some work done to it.

Nice thing about using the original generator is that you don't have to mess around making / altering brackets & it looks original if you are in to correctness. Only thing you will need to do is flip the wires on the amp meter if you switch to neg ground or it will show a discharge when charging.
 
You must log in or register to reply here.

Similar threads

D
Need for ballast Resistor in 12V conversion
Replies
11
Views
894
Pete in Holland MI
P
J
1953 Farmall Super C with a 2-wire distributor.
Replies
5
Views
193
Joe Kimbriel
J
T
Ohms rating of Ballast Resister
Replies
5
Views
359
gene bender
G
CloverleafDairy
  • Question
John Deere 720 Gas, Conversion from 6 to 12 volt system
Replies
9
Views
612
CloverleafDairy
CloverleafDairy
O
What am l missing
2
Replies
39
Views
2K
Oldmantractor
O
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top