We start with VERY bright ($$$) LED’s. We’ve installed an inline resistor so you can hook them up directly to your vehicle’s 12 volts DC. Be sure to observe correct polarity. Next we grab a set of clear Ghost Nutz. You can have one to four LED circuits in your nutz lights. Depending on the number of circuits, lamp placement holes are drilled into the center back of the nutz. Knowing that the viewing angle is very important when it comes to LED’s we drill them at a precise upward angle for optimum illumination. The LED’s are imbedded into the center region of the nutz and not exposed to the surface. After the proper LED’s are installed, the holes are weather sealed. The colors you can choose from of these VERY bright LED’s are Red, Yellow, Orange, Blue, Green, Ultra Violet (Black Light), and White. I believe in most states the only allowable rear facing colors on a non emergency vehicle are red, yellow or orange and white. Please check your area to be sure. If you are using these on a static show vehicle then any color will do. Choose Four Colors From Below *** NO REFUNDS OR EXCHANGES ON THESE AS THEY ARE CUSTOM MADE FOR YOU. Allow 14 days for Nutz to ship!