Product Details: Equip your semi truck to be Ready for the Road Ahead™, with the VSM Universal 7-Wire Turn Signal Switch, a key component that provides reliable control of turn indicators. Thanks to its straightforward design, this replacement component allows operators to effortlessly signal in the direct of a turn. Built with seamless wiring and a simplistic design for a fast and easy installation. FleetPride is your First Click in Heavy Duty®.