Outfit your semi truck to be Ready for the Road Ahead with a reliable power transfer to its lighting systems, with the Grote 8' Two Slim-Line Male to Two Under Light Female Jumper. This replacement wire acts as the bridge between an internal power source to an external light when a vehicle is switched on or off. Engineered with a streamlined design for a rapid installation into connectors and lights. FleetPride is your First Click in Heavy Duty .