The basic circuit of traditional ignition system is briefly described.

The traditional ignition system is mainly composed of power supply (battery and generator), ignition switch, ignition coil, capacitor, circuit breaker, distributor (distributor head and distributor cover), spark plug, damping high-voltage line and so on. The circuit diagram is very simple. You can search for "traditional ignition circuit of automobile", and there are many schematic diagrams. We know the shielding in the picture above.