Product Details: Update your semi truck with reliable control of its turn indicators, with the Truck-Lite 12V 7-Wire Harness Polycarbonate Turn Signal Switch that ensures you're Ready for the Road Ahead™. This replacement component provides direct control over a vehicle's turn signals, allowing operators to display the direction of turns or movements. Constructed with a straightforward design with included wiring for a fast and easy installation. FleetPride is your First Click in Heavy Duty®.