Fuse

Most motorcycles have a fuse block which houses a variety of fuses for different electrical circuits on the vehicle. Fuses protect electrical circuits from overloading by sacrificing themselves before damage can occur to electrical components or wires connected to the circuit. Most fuses contain a small filament, much like an incandescent light-bulb. When a circuit is overloaded the filament or link in the fuse melts and opens the circuit to prevent further damage. Fuses are rated by amperage limits they are designed to withstand. If the wrong size fuse is used it can cause damage to a circuit or cause premature failure of the fuse. Never replace a fuse with metal foil or wire once it has blown. AC circuits (ignition or lighting) will not be fused.