TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Farmall & IHC Tractors Discussion Forum

coil resistor

Welcome Guest, Log in or Register

Author

thumbanger

02-07-2006 16:07:28

Report to Moderator

How do I hook up coil resistor on C Farmall putting 12 volt batt have new 6 volt coil dont want to burn it up. Any help thanks

[Log in to Reply] [No Email]

John T

02-07-2006 16:20:57

Report to Moderator

Re: coil resistor in reply to thumbanger, 02-07-2006 16:07:28

The Ballast Resistor wires in series in the Ignitions Primary Circuit AFTER the Ignition Switch (its IGN output terminal, hot when ON) and BEFORE the input to the Coil, being the coils lil input (NOT to distributor) terminal. That way when the Ignition is on and the points are closed, it draws current and drops approximately 6 volts, leaving 6 on the coil as it was designed for. That way the coil dont overcurrent and overheat and the points switch the proper current so they last as they should.

I like to mount the ballast where its somewhat protected from damage and direct rainfall and secure its mounting clamp to metal of the tractor to help transfer heat away from it. They would ideally be near the same resistance of the coil but many off the shelf are like 1.5 to 1.85 ohms and 25 or more wattas, wirewound power units in a ceramic bathtub enclosure.

John T

[Log in to Reply] [No Email]

captaink

02-08-2006 07:17:20

Report to Moderator

Re: coil resistor in reply to John T, 02-07-2006 16:20:57

I like to change the switch on the starter to one that has a small terminal on the side that delivers current when the starter is running. I run a wire from there to the coil side of the resistor. That way I have a 12 volt start 6 volt run setup and it compensates for the voltage drop when the starter is engaged. I know on a C this isn�t a lot, but when you get to an M and it�s -20 F it becomes a big deal.

[Log in to Reply] [No Email]

thumbanger

02-07-2006 16:35:22

Report to Moderator

Re: coil resistor Thanks John T in reply to John T, 02-07-2006 16:20:57

Thanks John T for info love this site.

[Log in to Reply] [No Email]

kfox

02-07-2006 21:17:04

Report to Moderator

Re: coil resistor Thanks John T in reply to thumbanger, 02-07-2006 16:35:22

When I go to the autoparts store, I ask for a ballast resistor for a 85 6 cyl Dodge pickup. There is a 1/4 inch hole on the right side on the gas tank mount that used to hold a little bracket for the shutter control rod. Makes a good mounting place.

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

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

Copyright © 1997-2023 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