Enhance your classic 1963 Chevrolet Fullsize with our premium Backup Light Switch Extension Harness. Specifically designed for 4-speed manual transmission models equipped with factory gauges, this harness provides a dependable connection from your dash harness to the lead wires of your transmission-mounted backup light switch. Crafted for exceptional durability and a flawless fit, our harness is the perfect solution for restorations or repairs, ensuring superior performance compared to generic alternatives.