The sending unit in the fuel tank is a variable resistor (0-100 ohms). The wiring diagram shows a or Lg (Light Green) wire from sender to the gauge. A broken ground (black wire) at the tank is a common cause of an empty reading.
Bookmark a reliable source, keep a printed copy in your seat bucket, and take time to understand the flow of electricity from battery to bulb. Your Burgman will reward you with years of reliable, trouble-free service. suzuki burgman 125 wiring diagram
Suzuki used a . If your battery keeps dying, measure the 3x Yellow wires coming from the magneto. You should see ~20-40V AC (idle) and ~60V AC (revving). If you see 0V on any yellow wire, the stator is fried. The sending unit in the fuel tank is
section with comprehensive wiring diagrams for models from 2007–2010 and beyond. Key Electrical Components Bookmark a reliable source, keep a printed copy
Battery → Main fuse (30A) → Ignition switch → Starter relay (solenoid) → Starter motor.