Outfit your semi to be Ready for the Road Ahead with improved lighting, with the Truck-Lite 40 Series 12V Incandescent Light Module. With a robust design, this replacement light module is able to weather the elements while acting as a crucial component for turning, signaling, braking, and more. Fashioned with a steel body and polycarbonate lens to protect bulbs from everyday damage. FleetPride is your First Click in Heavy Duty .