(800) 853-2651
SHOP NOW

Farmall H tractor

H

Howard Parker

Member
Need to help a friend wire a farmall H right now there is a wire run to the coil from the kill switch doe it go the +
or - side of coil? then a wire comes from generator to the amp gauge which side does it go on? then a wire from
the amp gauge goes to the battery? or the starter? also forgot where should the power wire for the kill switch
come from? also where does the lights get there power from? thanks Howard
 
Search "Farmall H wiring" under images.

Make sure you are looking at he right diagram. The picture explains much better than words!

You state it has a coil, so I'm assuming it has battery ignition. If by chance it is a magneto, the kill wire goes to ground to kill the engine. Nothing about a magneto ever connects to the battery!!!

The polarity of the coil depends on the battery polarity. If it still has a generator, it probably is positive ground. If it is positive ground, the - terminal of the coil connects to the ignition switch. If negative ground, the + terminal of the coil connects to the ignition switch.

If it has been converted to an alternator, it will be negative ground and will need to remain negative ground.

The best way I know to determine the polarity of the amp meter is to watch the needle, see which way it swings. Turn on the ignition, lights, with the engine off, should show discharge. If backward, reverse the leads.
 
You must log in or register to reply here.

Similar threads

grandpa Love
Alternator issues
Replies
14
Views
721
Rich'sToys
R
B
Farmall 656 Gas no spark, has power to coil
Replies
7
Views
425
wore out
wore out
K
Farmall 300 6v generator, with a 12v system and battery
2
Replies
29
Views
880
Kevinjd1981
K
S
John Deere 520 wiring diagram positive ground.
Replies
16
Views
550
John T
J
O
630 ignition issues
Replies
4
Views
424
PJH
P
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