Upgrade your classic ride with the GM 1971 Engine Harness, meticulously designed for Chevrolet Chevelle, El Camino, Monte Carlo, and Malibu models. This high-quality harness is your go-to solution for ensuring reliable electrical connectivity and improved performance, specially modified for use with GM High Energy Ignition (H.E.I.) distributors. Say goodbye to electrical issues and embrace a smooth driving experience with this essential upgrade that outperforms stock alternatives.