A commonly used alternator is the Delco-Remy, which from the factory was negative ground. (It is possible to have one that has been modified for positive ground.) If you tried to install a negative ground alternator on your positive ground tractor it will immediately fry the alternator.
If you have the common Delco alternator the wiring would be: #2 on plug to large out put stud #1 on plug to output side of ignition switch with a diode, resistor, or idiot light in the line. Output stud to one side of ammeter. Light and ignition switches also go to this side of ammeter. Other side of ammeter to hot battery post.
If you need to switch to negative ground, ignition coil -- (if it has distributor) goes to side post on distributor.
Connect ammeter so it reads negative with lights on and engine not running.
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a Company you can trust and have generous return policies! Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ More Info ]
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.