Until LJD gets here who you requested to answer the question, I will post my opinions, he can post his when he arrives, which may agree or disagree with mine??????
YOU STATE: The ign. post on the switch goes to the battery post on the alt. HMMMMMMMMMMMMMMMM you need to check that switch wiring I think!!!!
1) Often an ign switch will have a BAT INPUT terminal that receives hot battery voltage ALL THE TIME from say the Load side of an ammeter, or an L terminal on a Voltage Regulator, or from the battery or another always hot supply voltage source. NOTE if the alternators output is connected to the battery (needs to get to baTtery somehow to charge it) or the ammeters load terminal (should be if it has one).....that electrical location can serve as hot battery voltage supply BUT IT SHOULD BE TO THE SWITCHES BAT INPUT NOTTTTTTTTTTTTTTT IGN OUTPUT
2) Often an ign switch will have an IGNITION OUTPUT terminal thats hot ONLY when the switch is ON. It feeds voltage to the coil.
3) Often and ign switch has an ACC terminal thats hot in the first position (not yet to ON) to feed loads
3B) Often an ign switch has a spring loaded START terminal thats hot when its held there to send voltage to a starter solenoid. THATS NOT WHAT SHOULD POWER THE COIL !!!!!!!!
4) The GM 10 SI 3 wire alternators (if thats what you have) little No 1 post is for excitation voltage. When you turn on the ignition a switch terminal that gets hot then (like to coil, or IGN) can be used to send excitation voltage to that alternator terminal. I would add a 10 ohm resistor in that line however
4) The other little no 2 terminal is voltage sense. It can be jumped to the alternators big main output post or to the battery or to the supply side of the ammeter.
SOOOOOOOOOOOO CHECK THE SWITCH WIRING it needs an always hot voltage source (battery or ammeter or alternators post) on a BAT INPUT TERMINAL and the coil can be fed off an IGN OUTPUT TERMINAL. (Thats hot anytime swith is ON)... When switchd ON the switch feeds voltage to the coil so it can fire. If it has a starter solenoid the START terminal wires there
Sorry no more time maybe LJD can help you Im late for chruch
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 - Ford Part Number Trivia - by Forum Participants. "Replaced by" means the part was superseded. All of my part books date back to 1964 and New Holland have changed some part numbers. They usually put the old Ford part number on the package. I was suppressed when I looked up the part number of the auxiliary drive shaft because for some reason the part number went through a radical change and it lost its "Basic Part Number". Ford part numbers follow the following rules. Most part numbers are in three parts. The middle part is called the
... [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.