Harley-Davidson Wiring Diagrams and Schematics Free Harley Davidson wiring diagrams, schematics. We have: Harley-Davidson wiring diagrams and schematics. Custom chopper wiring diagrams. Stator wiring | Harley Davidson Forums wwwmeline›General Tech Harley Davidson›ElectricalOnce again I thank you for your help. The wiring diagram shows three black wires going from the Stator to three black wires coming from the voltage regulator.