Lets assume we are talking about the Delco 10si alternator.
First thing I am going to question is 'true One wire alternator' Them thing are expensive. Many are marketed as true One wire alternator but are not. They work OK on a gas car engine with higher RPM's but with a 1500 rpm tractor you need to rev them way up at start up to get the alternator charging. You can wire it as a one wire now and if not happy convert it to a 3 wire later. Or if you want the dash idiot light to work wire it as a 3 wire setup now.
Any wiring from the generator and voltage regulator can be removed. You need none of it.
On the back of the alternator there is a 'B' post. 10 gauge wire gets hooked here and run to the battery positive. Most hook it where ever the battery cable hooks such as starter solenoid.
Your dash light should have two wires on it. As you said one of the wires goes to the key switch. If you want to wire it as a three wire the other wire on the light goes to the #1 plug post on the alternator. The #2 plug post on the alternator gets jumped back to the B post on back of alternator. You can buy the wire end plug for this alternator at any parts store.
I will include a wiring diagram for a Ford tractor but it should be the same with minor differences. It should at least give you a picture to try and follow along as you read. If you want to convert over to an amp or volt gauge let me know as I have diagrams that show those.
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. 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 Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[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.