IH Farmall 460, 560 Gas/Diesel -Tachometer-Temp-Oil Pressure-Ampere
The tach has a 5/8" UNF cable end and has a nice 12 volt light option feature. The light option feature you can choose to use or not to use it. The IHC / Farmall part number it replaces is 383093R91, 383092R91 & 383093R91.