Upgrade your classic Buick's electrical system with our premium Tachometer Light Feed Harness. Designed specifically for the 1963 and 1964 Buick Fullsize and Riviera models, this wiring harness ensures a seamless connection from your dash harness to the tachometer, delivering reliable performance and enhancing your driving experience. Say goodbye to unreliable alternatives and enjoy the peace of mind that comes with using a product engineered for precision and durability.