1. The daytime running lights rely on wind power to rotate without the need for power, so there is a slight difference in brightness compared to the lights connected to power 2. For use outside of cars (also used for motorcycles and bicycles), when the car is traveling at a speed of 40 km/h, the airflow drives the wind blades to generate electricity, causing the product to emit light. The faster the speed, the brighter the light 3. When driving, the light does not light up: There is only one reason, the fan speed is not enough to drive the motor to generate electricity. When installing, align the fan direction with the windward direction and try to move it outward as much as possible. Do not install it in the grille, as it is easier to get wind and the better. Installation prompt INSTALL 1. Please wipe the installation position clean before installation to ensure dryness and cleanliness 2. It is recommended to use a hair dryer to heat the Double-sided tape to improve the viscosity 3. Press lightly and forcefully during installation to effectively fit 4. Do not get wet or drive within 24 hours after installation, as it may fall off easily