This is the solution to your windshield wiper problems for your 1939-46 Chevy Truck. This kit is a complete system utilizing New Port Engineering's cutting edge technology designed to replace the original individual wiper motors with a dual wiper linkage system that fits entirely behind the stock header panel. The kit includes everything you need, heavy duty 2-speed motor, all mounting brackets, bronze oilite bushed transmissions, linkage, wiring harness, switch, and Polished Stainless Steel wiper arms and blades. It also includes a drill jig to enlarge the driver's side hole and drill the passenger side hole if not originally equipped with 2 wipers.12 volt wiring is required. The easiest installation you will ever perform on your truck, New Port Engineering have done the work so you don't have to! 3-YEAR WARRANTY