Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Classified Ads
Photo Ads
Tractor Parts
Salvage

Community
Discussion Forums
Project Journals
Your Stories
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

  
Farmall & IHC Tractors Discussion Board

Re: farmall A 12volt converision


[ View Follow Ups ] [ Post Followup ] [ Return to Forum ]

Posted by Steve - IN on March 30, 2003 at 16:16:57 from (12.222.31.186):

In Reply to: farmall A 12volt converision posted by cdv on March 30, 2003 at 15:32:08:

cdv,

The resistor you've heard about is probably to protect the existing 6 volt coil if you feed it 12 volts. You'll need about 2 ohms rated at 50 watts to do the job.

The least amount of new stuff you'll need to convert to 12 volts is: new battery, new regulator, new light bulbs. Typically, most guys stick in a 40 amp alternator.

In my opinion and experience a good set of 0 gauge cables and a new battery will get a 6 volt system working fine, and if not, a generator rebuild and regulator cleaning will still accomplish the objective for less money than a conversion. The benefits of putting an 40 or greater amp alternator on a system that has a max draw of only 20 amps or so really does escape me. Of course, if you're putting a 250 watt car stereo system on your tractor, you'll need that 12V alternator.

As for a diagram, your parts or service manual should clue you in. If not, BobM has been very good in posting a number of schematics. You can find them by searching the archieves here.

Steve


Follow Ups:




Post A Followup

:
:

: Re: Re: farmall A 12volt converision

:

:

:

:

: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.


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. [ About Us ]

Home  |  Forums


Today's Featured Article - Timing Your Magneto Ignition Tractor - by Chris Pratt. If you have done major engine work or restored your tractor, chances are you removed the magneto and spark plug wires and eventually reached the point where you had to put it all back together and make it run. On our first cosmetic restoration, not having a manual, we carefully marked the wires, taped the magneto in the position it came off, and were careful not to turn the engine over while we had these components off. We thought we could get by with this since the engine ran perfectly and would not need any internal work. After the cleanup and painting was done, we began reassembly and finally came to t ... [Read Article]

Latest Ad: 1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952 [More Ads]

Copyright © 1997-2025 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