For the ones who’d rather build it.
Motorcycles and cars. Built at your own pace.
The good stuff never stays stock.
A place to keep your build going. Share the work, figure out the wiring, and make the part you can’t find.
A little help at the workbench.
Useful tools for the next job on your list.
Start with a wiring diagram.
Ironhead, XS650, and Shovelhead references with interactive circuits, component lists, and source notes.
1978 XLH
1978 Harley Sportster XLH Chopper Diagram
An interactive wiring diagram for a 1978 Harley-Davidson Sportster XLH chopper.
Explore diagram
1974 XS650
1974 Yamaha XS650 PMA & Points Chopper
An interactive Yamaha XS650 chopper wiring diagram based on a permanent-magnet alternator and points ignition configuration.
Explore diagram
1966-1984 Shovelhead
Shovelhead Magneto & Capacitor Chopper
An interactive Shovelhead magneto chopper reference that keeps the self-powered ignition separate from the batteryless lighting and charging circuit.
Explore diagramThe work is worth sharing.
The bracket you made twice. The wiring you finally figured out. The first time it ran. Keep those details with the build so the next person has somewhere to start.