Abstract: A traction motor speed sensor support arrangement (30). A proximity sensor (34) is mounted within a housing (32) having a sensor support portion (44) cantilevered from a base portion (40). Dowel pins (60) extending from the base portion (40) position the sensor (34) at a predetermined locative relative to a rotating wheel (56) within the motor (10). A wire (50) leading from sensor (34) is formed in a rolling U (68) to accommodate movement of the motor (10) relative to the locomotive (52). The wire (50) is terminated at a connector (36) including a back shell portion (74) containing a stress-relieving loop (80) formed in wire (50). The natural frequency of the housing (32) is controlled to be greater than a predetermined value associated with the natural frequency of the motor operation.