Original factory HARLEY DAVIDSON FX 1977 dealership manuals by DIY Repair Manuals. Best selection and lowest prices on operators manual, service repair manuals, electrical wiring diagram, and parts catalogs. DIY is the top-rated supplier of printed dealership factory manuals. All manuals in stock.. I'm getting ready to work on the wiring harness of my bike, a 1979 FL (I'll be modifying my bike to utilise twin cam era hand controls). I have the service manual diagram, but my eyes start to blur over trying to trace the wires. I exported the diagram and overlaid the actual color of the wires.
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Here we have compiled a list of free Harley Davidson wiring circuit diagrams to help you diagnose any electrical issues your beloved motorcycle may face. Harley Davidson enthusiasts may encounter wiring diagrams and electrical troubleshooting issues during peak periods.. MISCELLANEOUS ELECTRICAL (2 OF 2) CIRCUIT BREAKER AND BRAKE SWITCHES (1 OF 2) CIRCUIT BREAKER AND BRAKE SWITCHES (2 OF 2) STARTER SWITCHES IGNITION AND HEADLAMP SWITCHES HANDLEBAR SWITCHES - OLD STYLE HANDLEBAR SWITCHES - NEW STYLE GAUGES VOLTAGE REGULATOR SADDLEBAGS (1 OF 2) SADDLEBAGS (2 OF 2) XL-1000 75TH ANNIVERSARY MODEL 1977 XLT PARTS.