Alternator conversion kits and components for 1939 to 1964 4 cylinder engine generator charging system type Ford tractors including 9N, 2N, 8N, NAA/Jubilee, 500, 501, 600, 601, 700, 701, 800, 801, 900, 901, 2000, and 4000. Converts these systems to alternator type charging systems.