Revitalize your classic 1966 Buick Fullsize or Riviera with our premium Transmission Kickdown Harness. Specifically designed for S.T. 300 automatic transmissions, this harness ensures reliable performance and smooth operation by providing a secure connection for your kickdown cable. Unlike alternatives that may fall short in quality or compatibility, our harness is engineered for durability and precision, making it the ideal choice for car enthusiasts looking to restore their beloved vehicles.