2 speed wiper motors have a separate wiring harness from the bulkhead connector to the motor.3 speed motors the harness is part on the wiper motor and as far as I know not available separately. You could find a core motor and cut the harness off and splice onto your motor or just find a working motor w/harness and install

1970 Dodge Charger R/T S.E. 1969 Dodge Dart GTS 440 M-Code 1970 Dodge Charger 500 383/4-speed w/A.C.