What does the horn relay do?

The horn relay is an electrical component in a vehicle's horn system that acts as a switch to control the horn's operation. When the horn button is pressed, the relay receives the signal and closes the circuit, allowing current to flow to the horn and activating it. This helps manage the electrical load, ensuring that the horn operates efficiently without overloading the system. Additionally, the relay improves the responsiveness of the horn by allowing a higher current to pass through without directly involving the horn button.