Upgrade your classic ride with the 1964 Chevrolet Fullsize Backup Light Switch Extension Harness from Lectric Limited. Designed specifically for 4-speed manual transmissions, this reliable wiring solution ensures your backup lights operate seamlessly, enhancing both safety and functionality. Say goodbye to unreliable and complicated wiring systems—this extension harness provides a straightforward solution for restoring your vehicle's electrical integrity without the hassles of DIY repairs.