The GM 1963 Chevrolet Fullsize Rear Body Harness is engineered to elevate your classic car restoration experience. Specifically designed for 1958 and up models, this harness ensures seamless connectivity from the dashboard to the rear body panel. Ideal for Biscayne and Bel Air 4-door configurations, it provides superior reliability and performance compared to outdated alternatives. With factory-installed backup lights compatibility, you can maintain the authentic charm and functionality of your vintage vehicle.