Direct replacement Contactor for the following KFI winches: ST17 / A2000 / A2500-R2 / A3000 / U4500 / U45-R2 / U4500w / U45w-R2 / SE25 / SE35 / SE45 / SE45-R2 / SE45w / SE45w-R2 Requires correct rocker switch to operate contactor Rocker switch uses switch with three wires, two wires to contactor and one to keyed power NOTE: The wiring and connections may be a little different between brands.. WINCH CONTACTOR