Abstract: A method and apparatus for electrically activating range shift apparatus in transmissions of trucks or the like wherein such activation is customarily accomplished by actuation of valves on air lines from the shift apparatus knob to the proximity of the transmission, such air lines, or the like, are directed along a shift bar from the transmission area up to the knob of the shift bar and then along the shift bar to the point of actuating shift changes in the transmission. In the present case electrical switch apparatus in the knob of the shift bar is provided which electrically actuates a low voltage solenoid valve arrangement which controls the transmission's air actuated shifting means without the need of relays, and the like.

Abstract: A method and apparatus for electrically activating range shift apparatus in transmissions of trucks or the like wherein the activation which is customarily by an air line from the shift knob is caused to occur in the direct proximity of the transmission, rather than is usually the case where the air lines or the like come into the truck cab or the like and are generally associated with the shift bar and activated by means directly at the shift knob. In the present case an electrical switch is provided at the knob and electrical wires are carried through the shift bar directly to the proximity of the transmission at which point solenoid valves are arranged so as to accomplish the pressure through the various air lines as required right at the transmission location.