To install these tail light overlays, first, clean and wet the surface of the overlay and the tail light. A mixture of a drop of dishwasher soap and water can help you align the piece. Place the overlay in the right area and use your fingers to squeegee the water out. This will protect the overlay's surface. Let the overlay stick to the tail light for 24 hours. Once it's completely dry, it can withstand automatic car washes and most power washing. For the best results, match these overlays with LED bulbs to enhance the look of your vehicle. Keep an eye on the overlay's condition and clean it gently with a soft cloth if needed.