Upgrade your classic Chevrolet with our top-of-the-line Engine Harness designed specifically for 1965 and 1966 Fullsize models. Crafted with precision and built for performance, this wire harness ensures a reliable and hassle-free connection for your factory gauges. Say goodbye to frayed wires and faulty connections—our engine harness provides enhanced durability and improved electrical performance, making it the ideal choice for both restoration projects and everyday driving.