Using these Noble DRL bezels is easy. First, make sure your car is turned off. Then, install the bezels following the plug - and - play method. If your car has adaptive headlights, use the 'Premium' harness; if not, use the 'Base' harness. Once installed, when you turn on the accessory power, the LEDs will light up white. When you use the turn signal, they'll switch to blinking amber and go back to white when the turn signal is off. As for maintenance, keep the bezels clean by wiping them with a soft, dry cloth regularly. Avoid using harsh chemicals that could damage the glossy black finish. Remember, these bezels don't come with fog lights, and they're only for USDM vehicles.