(800) 853-2651
SHOP NOW

Charging system help

1

1939farmall

Member
Ok what is the right way to wire up. Wire from the post goes to where
on the tractor? Where does spade 1 and 2 wire to? Thanks for you
help.
cvphoto42334.jpg
 
Type Bob M's 12 volt conversion wiring diagrams into a search box. Think I got the right Bob.
 
If you don't find the post, all that's left is to energize terminal #1 to excite the system to start charging. I like to use an oil pressure switch, or if using a key switch use the accessories terminal for gas engines. DON'T hook it with the ignition terminal, or engine won't shut off due to the alternator back feeding the distributor supply wire.
 
I would say he needs to push the #2 spade farther on the terminal. Using a clearance light, or a 20 ohm resistor, or a diode with the band toward the alternator will also keep it from running with the switch off. Jim
 
You can buy the harness plug that fits the terminals on top at any auto supply.

Holds the wires on, prevents them from shaking loose and shorting out, keeps them from getting reversed.
Wiring Diagram
 
I buy these at the shop that rebuilds my starters and other stuff.
I just put the red wire on the back post of the alternator and the white wire to the ignition switch. plug it into the adapter with the diode then to the alternator.
mvphoto45497.jpg
 
You must log in or register to reply here.

Similar threads

M
4020 24v starting system wiring question
2
Replies
20
Views
552
Tx Jim
Tx Jim
stevieb49829
One wire and 3/2 wire 10SI
2
Replies
27
Views
626
HFJ
H
G
Ford 4110 diesel. Need help with identifying wire
Replies
5
Views
244
greytop
G
S
need some help with a massey-ferguson 230 wiring issue
Replies
4
Views
289
Brown David
Brown David
M
  • Question
JD 2440
Replies
12
Views
469
mbest
M
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