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1. Arrangement of instruments and switches

2. Electrical wiring

The electrical wiring of a motorbike is basically similar to that of a car. The electrical wiring is divided into several parts: power supply, ignition, lighting, instrumentation and audio.

The power supply is generally made up of an alternator (or powered by a magneto charging coil), rectifier and battery. The magneto used in motorbikes has a variety of structures depending on the type of motorbike. There are generally two types of magneto: the flywheel magneto and the magneto with steel rotor. The flywheel magneto is generally used in small displacement micro and moped motorbikes, where four magnets are evenly distributed inside the flywheel, rotating together with the engine crankshaft. In the magneto rotor type magneto, the structure is the opposite of the above, six magnets are evenly distributed around the circumference of the rotor, the magnets are die-cast together with the rotor in aluminium alloy and the rotor is connected to the crankshaft by a key. Six sets of coils with wound iron cores are distributed in the stator. As the rotor rotates in the stator, the magnetic lines of force alternate through the stator coils to produce an induced alternating current.

There are three types of ignition for motorbikes: battery ignition systems, magneto ignition systems and transistor ignition systems. In the ignition system, there are two types of ignition: contactless capacitor discharge ignition and contactless capacitor discharge ignition. Contactless capacitive discharge is abbreviated as C.D.I. C.D.I actually refers to a combined circuit consisting of a capacitor charging and discharging circuit and a silicon controlled switching circuit, commonly known as an electronic ignition.

There are various coloured wires in the motorbike circuit, customarily the red wire is the power "+" wire, the black wire is the ground "-" wire, the orange wire is the line leading to the ignition coil, the magneto output current is the white wire, the blue is the headlight wire, etc. This is just This is only the general customary usage for reference.