Function: The headlight switch controller provides smooth and precise control of the vehicle's fog lights and headlights, improving visibility in fog, rain, or mist and enhancing driving safety. Responsive control: Quick switch response and smooth mode switching enable effortless control of the headlights or fog lights, making driving more convenient. Material and durability: Made from durable, temperatureresistant plastic, ensuring stable operation in daily driving and in harsh environments. Installation and compatibility: OEMstandard design with size and mounting points for direct replacement of aging or damaged components without modification, making installation quick and easy. Use scenario 1: Driving in fog or heavy mist on highways or rural roads, the controller allows fast and reliable switching between fog lights and headlights to maximize visibility. Use scenario 2: Night driving in rain or drizzle, where quick mode changes and stable performance support safer operation and reduced driver effort. Use scenario 3: During vehicle maintenance or replacement, the switch can be swapped directly for an aging or damaged component, preserving original fitment and avoiding modifications.