67 Dart Wiper Motor Wiring diagram
3 speed motors have some single strand resistor wires with asbestos/fiberglass casings. That stuff dry rots and falls off. That's what I think I'm seeing. Same as my leece-neville variable 3 speed on 67 fish.
The 2 speed motors had only 2 wires out of the motor. One resistor was at the switch until later models where it moved to mounted on the motor.