No. Without a relay, thicker wires are required to connect the button switch on the steering wheel, making wiring quite challenging. Relay: A relay (English name: relay) is an electrical control device that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity (excitation quantity) meets specified requirements. It establishes an interactive relationship between the control system (also known as the input circuit) and the controlled system (also known as the output circuit). Typically used in automated control circuits, it essentially acts as an "automatic switch" that uses a small current to control the operation of a larger current. Therefore, it plays roles such as automatic regulation, safety protection, and circuit conversion in electrical circuits. Function of the Horn Relay: It amplifies the current. When a single electric horn is installed in a car, the horn button usually controls it directly. However, most cars are equipped with two types of horns, high and low pitch, or even high, medium, and low pitch electric horns to achieve a more pleasant and harmonious sound effect. When two or one electric horn operates simultaneously, the current can reach 15A or even more than 20A. If the horn button is used for direct control, the high current will quickly burn out the horn button. Therefore, a horn relay is employed.
