WAI global/Transpo part number is D101HD for the heavy duty version, D10SE for self exciting, but the SE's don't work in every unit depends a lot on how the stator is wound. theres also a D10AC self exciting. old Delco number is 1116392, 1116423. If you think you may have a 6volt rotor (never seen one) hook an amp gauge to a 12 volt battery and touch each lead to each of the slip rings on the rotor. your amp gauge should show about 3-5 amps. a 6v rotor would draw twice that at 12v say 6-10v. then find a good used rotor or new, let us know what you find.
