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MOTORCYCLE / ELECTRICAL / RESTORATION
1981 Yamaha XJ750
A 1980s Yamaha rebuilt into a simpler, cleaner and more purposeful road machine.
Platform1981 Yamaha XJ750 Seca
System focusElectrical + controls
InstrumentationAcewell 2853
StatusActive build
Project
notes.
Simplify the machine.
The XJ750 is a hands-on exercise in understanding an older motorcycle well enough to remove complexity without removing necessary function. Every deleted relay, diode, switch or circuit has to be understood before it disappears.
Current direction
The current build includes simplified starting and interlock logic, replacement relays, inline diodes, updated instrumentation, revised lighting and general recommissioning. The objective is not to erase the bike’s age; it is to make the systems easier to understand, diagnose and maintain.
Current project scope
- Starting-circuit and sidestand logic
- Relay and diode simplification
- Acewell instrumentation integration
- Independent headlight circuit
- Mechanical recommissioning and road setup