Upgrade your classic ride with our top-of-the-line Engine Harness designed specifically for the 1966 Chevrolet Chevelle, El Camino, Monte Carlo, and Malibu. This harness optimizes your vehicle's electrical system, ensuring superior performance and reliability. With modifications for a GM H.E.I. distributor, it’s the perfect solution for those looking to enhance engine performance while maintaining the classic feel of their beloved car.