A TO-20 will not have a solenoid unless someone has added one to it. It has a switch that is on the bell housing. The hot battery cable runs to one side and a cable comes off the other side and runs to the starter. When you move the shifter to the S position the shifter linkage pushes up on the switch on the bell housing and completes the circuit. If someone has added a solenoid to it I would remove it and use the original starting system for two reasons. It"s a simpler system and there is less to trouble shoot if something goes wrong and it is safer. You can"t crank the tractor in gear with the original system. All the wiring diagrams you need can be found at FENA. Ferguson Enthusiasts of North America. It"s under the resources tab. http://fergusontractors.org/fena/
Fast Shipping! Most of our stocked parts ship within 24 hours (M-Th). 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. [ About Us ]
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.