These are a great addition to reduce mud, water, and dirt from getting on the electronics while adding a scale appearance! They have a place in each fender well for a led to be placed in if you want Rock Lights. To install you simply remove the screws along the side of the frame and then line this up and reattach. I have countersunk holes so things will look flush and correct. The leds included are simply LEDs with wire leads. You need to wire it in to the car or seperate battery if you so chose. They also are fully compatible with my rock sliders, headlight and taillight kits! I always strive to bring the best quality product to you I can l. This is made on a 3d printer and may have slight imperfections.