This listing is for a reverse backup lamp switch designed to fit 1964-1966 Ford Mustang GT fastback, coupe, and convertible models. The switch is made by Atech and meets all California Prop 65 warning requirements. Please refer to the provided link for more information on the warning. This part is categorized under switches and controls, interior parts and accessories, and car and truck parts and accessories. It is a reliable replacement for your original switch. Please contact us if you have any questions or concerns. Thank you for considering this item.