What does the ignition relay do?

The ignition relay is an essential component in a vehicle's starting system. It acts as a switch that controls the flow of electrical power to the ignition system, allowing the engine to start when the ignition key is turned. By providing a direct connection between the battery and the ignition system, it helps to ensure that the necessary voltage reaches the ignition components, enabling smooth engine operation. Additionally, it protects the ignition switch from wear and damage by handling the higher current required to start the engine.