Upgrade your classic Buick with the GM 1955-1961 Fullsize/Riviera Air Conditioning Compressor Adapter Harness. Designed for those replacing an original 5-cylinder compressor with a more efficient 2-blade terminal compressor clutch, this harness ensures seamless compatibility and reliable operation. Say goodbye to the frustration of complex wiring and embrace a hassle-free installation that restores your vehicle's cooling system to optimal performance.