The Nilight 6” Oval Trailer Tail Lights feature 10PCS high-quality 3030 LED chips, providing immense brightness for brake/stop lights and low brightness for tail/running lights. Our product utilizes high-quality ABS and PC lens materials combined with ultrasonic welding technology to make it waterproof, shock-proof, and dust-proof. To ensure maximum visibility and safety in even the harshest of climates, the red wire is for high brightness stop/brake lights, while the black wire is for low brightness tail/running lights. Installation is simple with the use of 8 self-tapping screws and tools such as gundrills, screwdrivers, and more. This is a hard-wired type wire harness and not plug-and-play. Ideal for all 12V vehicles, such as trucks, trailers, bus, RV, pickup, tractors, semi-trailer, boat trailer, horse trailer, travel trailer, and dump truck, it can be used as a tail light, turn signal, stop light, side marker light, clearance light, or rear light.