Outfit your semi truck to be Ready for the Road Ahead with reliable safety lighting, with the Truck-Lite 7" 16-Gauge GPT Wire Marker / Clearance Plug. This replacement component is designed for use in constrained-space situations, making it an ideal option for hard-to-reach areas. Crafted with a durable polycarbonate lens for advanced heat and impact resistance. FleetPride is your First Click in Heavy Duty .