Upgrade your classic 1957 Chevrolet Fullsize with the Steering Column Turn Signal Switch Adapter Harness. Designed for seamless compatibility with Ididit or 1969-1976 GM columns, this robust adapter enhances your vehicle’s functionality by connecting the horn, directionals, and 4-way flashers directly to the stock 1957 dash harness. Enjoy improved safety and performance without the headaches of complicated installation or compatibility issues!