Posted by jdemaris on September 25, 2013 at 04:55:20 from (70.215.11.151):
In Reply to: Re: john deere key sw posted by Big P on September 24, 2013 at 17:01:13:
OEM switch has a built in ballast resistor that comes off the I terminal. It is made for a fixed load that the ignition coil provides. When you put the extra load of the alternator field on it - its resistance will increase. It is made with the correct ohms resistance to power the coil only.
If you need to use the original switch - you can either tap into the power before the resistor for the alternator field - or just install a second switch for the alternator field. If you tap into the OEM switch then yes, you need a diode that can handle 5-10 amps. Otherwise once started, the tractor won't shut off.
Using a universal key switch with an ACC position makes it a lot easier. When "off" the "ACC" and "IGN" terminals are isolated from each other. If you use "ACC" for alternator field and "IGN" for ignition - no diode or extra switch is needed.
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 ]
Today's Featured Article - Field Modifications (Sins of the Farmer) - by Staff. Picture a new Chevrolet driving down the street without it's grill, right fender and trunk lid. Imagine a crude hole made in the hood to accommodate a new taller air cleaner, the fender wells cut away to make way for larger tires, and half of a sliding glass door used to replace the windshield. Top that off with an old set of '36 Ford headlight shells bolted to the hood. Pretty unlikely for a car... but for a tractor, this is pretty normal. It seems that more often than not they a
... [Read Article]
Latest Ad:
Sell 1958 Hi-Altitude Massey Fergerson tractor, original condition. three point hitch pto engine, Runs well, photos available upon request
[More Ads]
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.