ELI5: Explain Like I'm 5

Ignition system

An ignition system is like the spark plug in your car. It uses electricity to create a spark that ignites the fuel in your car's engine. This spark helps the engine create power to move the car forward. To create a spark, the ignition system needs electricity. It gets this electricity from a battery and sends it to the spark plug. Inside the spark plug is a wire which has an electric current running through it. When the electric current hits the spark plug, it creates a spark which ignites the fuel in the engine and helps it run.