An electronic vehicular transmission and a coupling and control assembly for use herein are provided. A case of the transmission has an environment hostile to electrical components during use of the transmission. A coupling member supported for rotation within the case has a coupling face oriented to face radially with respect to a rotational axis. The transmission also includes an electromechanical component capable of operating in the environment. The component includes a mechanical locking element, at least one excitation coil and electrical wiring to supply electrical power to the at least one excitation coil from a power source outside the environment. The component is mounted to and extends into the environment of the case so that the locking element is in close-spaced opposition to the coupling face and the wiring is segregated from the environment to resist long-term, hot temperature embrittlement and fragmentation of insulation on the wiring.