What Is a Horn Relay?

Answer When you press the horn button on your car or truck, you operate a relay that makes contacts to connect the horn to voltage from battery. Low current through the button controls higher current thro... Read More »

Top Q&A For: What Is a Horn Relay

How do I wire a car horn relay?

ProcedureLocate the non-battery wire of the ignition switch. Make a connection from the ignition switch wire through the horn relay box and attach it to the horn button or switch. Run a hot wire f... Read More »

How to Install a Horn Relay?

A dead horn is more than just an inconvenience -- it's a safety issue. A major cause of horn failure is the relay that controls it. When you hit the button on the steering wheel, you close a simple... Read More »

How to Wire a Car Horn Relay?

A car horn relay is nothing more than a "remote light switch" from an electrical standpoint. The relay is normally open with power from the battery to the relay and from the relay to the horn. The ... Read More »

How to Locate a Horn Relay?

Automotive horn relays are a type of electrical switch used to transfer an electrical current to the horn. Since auto horns are wired through a harness to the battery, this type of switching is nec... Read More »