Posted by rvirgil_KS on December 10, 2017 at 09:05:57 from (50.93.234.250):
In Reply to: Re: 1 Wire or 3 posted by Traditional Farmer on December 10, 2017 at 07:05:40:
One side of the "idiot light" is wired to the coil side of the switch, regardless of whether the light is used to excite the #1 pin on a Delco alternator or simply as a "key on" light.
With a "key on" indicator the other side of the lamp would be grounded and the lamp would glow until switch is turned off or the bulb burns out. Since the light is often used as a charge indicator, the operator would need to be aware that it is now used only as a key on warning and not a no charge warning.
When used to excite the Delco alternator, the other side of lamp grounds through alternator. When engine starts and alternator begins charging, the diode trio in the alternator supplies 12 volts to alternator side of the lamp and it goes out indicating the charging circuit is working. Hence, in this case the lamp can serve both as a "key on" and a no charge indicator.
Upload one or more videos to your post. Photo filesizes should be less than 300K and Videos, less than 2MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
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 - A 1937 John Deere Unstuck - by Gary Hickman. Here is my story of how I got the pistons out of a 1937 JD B that the engine had been stuck for about 14 years: About 12 years ago my Dad gave me one of the tractors I ran as I was growing up on our farm in central Nebraska. The engine on this tractor, a 1937 John Deere "B", had been stuck for 2 years before he gave it to me. This last spring (1999) I hauled the tractor to our 2 acre lot in St. Libory Nebraska where it joined my antique machinery collection, at that time a 1929 Caterpillar T
... [Read Article]
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.
