Product Details: The Truck-Lite 2.1" 40 Series Stop / Turn / Tail Signal Light is the perfect choice for a wide range of applications. This light features a heavy gauge metal module and comes with a preassembled junction box with wiring harness for easy installation. It is designed to fit perfectly and meets DOT FMVSS 108 requirements. The light is powered by 12V and uses incandescent bulb technology with a PL-2 lamp connection. With its reliable performance and easy installation, this light is sure to provide you with the visibility you need. FleetPride is your First Click in Heavy Duty®.