Upgrade your classic Chevy with the top-quality Engine Harness from Lectric Limited, designed specifically for 1966 Chevrolet Fullsize models equipped with 396 & 427 cubic inch engines. This premium wiring solution not only enhances your engine performance but also integrates seamlessly with factory gauges and C.A.C. A/C systems, making it the ideal choice for restoration enthusiasts who demand reliability and authenticity.