Welcome! Please use the navigational links on your left to explore our website.

Company Logo (800) 853-2651 Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Classified Ads
Photo Ads
Tractor Parts

Discussion Forums
Project Journals
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

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

Research & Info
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

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

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Kountry Life
Allis Chalmers Discussion Forum

Allis Chalmers CA with 12V conversion wiring

Welcome Guest, Log in or Register

05-02-2008 04:21:57

Report to Moderator

I am working on an AC CA for my neighbor & do not have the wiring diagram of how a 12V alternator connects to the tractor. The alternator has 3 connections (1, 2, and +) and is a Delco Remy. Any help would be appreciated

[Log in to Reply]   [No Email]
Kentb of SWMO

05-02-2008 05:40:16

Report to Moderator
 Re: Allis Chalmers CA with 12V conversion wiring in reply to mez6266, 05-02-2008 04:21:57  
About any general car repair manuel from the 70's will have the diaghram in it, but the wiring is relativly simple. The post on the alternator should go directly to the load side of the amp meter if an amp meter is beening used. If no amp meter go directly to the plus side of the battery with at least a 12 gauge wire. 10 gauge would be better. The next terminal to the right looking from the back of the alternator needs to go to a switch 12 volt line from the ignition switch. This line needs a 10 ohm 7 1/4 watt resistor, 10 ohm 10 watt will work, or a diode with the band on the diode TOWARD the alternator. Why you need the resistor or the diode is where a vehical with battery ignniton will die when the ignition switch is turned off. The next terminal to the right need to be connected to 12 Volt. This connection is the regulator "sense line" This is the voltage the regulator "looks at" to determine the batteries charge. Many people connect this wire to the post on the alternator. This will work and GM did this in later years BUT electrically it is NOT really right as when the alternator is charging there is a voltage drop in the heavy wire. If the wire is connected to the post the regulator will be seeing alternator voltage not battery voltage. There will be a few tens of a volt differance. I always connect this wire to the battery. It will take two or three extra feet of wire to wire it this way but it is really the correct way.


[Log in to Reply]  [No Email]

05-02-2008 07:28:10

Report to Moderator
 Re: Allis Chalmers CA with 12V conversion wiring in reply to Kentb of SWMO, 05-02-2008 05:40:16  
Thank you

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

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 - History of the Cockshutt Tractor - by Danny Bowes (Dsl). The son of a very successful Toronto and Brantford, Ontario merchant, and himself quite an entreprenuer, James G. Cockshutt opened a business called the Brantford Plow Works in 1877. In 1882, the business was incorporated to become the Cockshutt Plow Company. Along with quality built equipment, expedious demand and expansion made Cockshutt Plow Works the leader in the tillage tools sector of the farm equipment industry by the 1920's. ... [Read Article]

Latest Ad: Two rear tires and spin out rims. 16.9x28 on there now. Help me out. I dont mind going with a different size but stay kind of close. Please contact me asap. [More Ads]

Copyright © 1997-2021 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