In the rapidly evolving world of automotive electronics, interface relay modules play a pivotal role, serving as critical components that facilitate the efficient operation of a vehicle's various electronic systems. These modules act as intermediaries, enabling communication between the low-power logic functions of a vehicle’s control systems and the high-power loads required to operate devices such as headlights, windshield wipers, and electric fans. The importance of these modules cannot be overstated, as they are essential for both the functionality and safety of modern automobiles.