Mustang Taillight Wiring | CJ Pony Parts The Ford Mustang taillight wiring harness acts as a central hub for all your Mustang tail light wires, and creates a safe and organized home for everything related to your taillight wiring. The automotive industry has made major strides in the realm of LED lighting over the years, and there is a good chance that your factory Mustang tail light Taillight Wiring - National Parts Depot 1948-1979 Ford Truck Taillight Wiring . WIRE ASSY Taillight CROSSOVER. #F-13A409-6A. 1961-1962 Ford Truck. View all applications . $83. Add to Cart. WIRE ASSY Taillight CROSSOVER Tail Light harness to. #F-13A409-49A. 1961-1963 Ford Truck. View all applications .