12 VOLT round coil for 12 volt conversion from 6 volt. thru 1964 Also fits 2000,3000, 4000, 1965 and up. Uses external resistor. D5TE12029AB$16.34 Davis Tractor Parts Ford 8N Dept 24263 Antioch Rd. Andalusia, AL 36421 Phone: 334-222-7214 Fax: 334-222-0025 Email: parts@davistractor.com