Horn button retainer or index plate for Ford and Mercury, compatible with 1961-1966 F Series Truck compatible with 1960-1964 Ford Galaxie compatible with 1962-1964 Ford Fairlane compatible with 1960-1964 Ford Ranchero compatible with 1960-1964 Ford Falcon compatible with 1960-1964 Mercury Comet compatible with 1964 Mustang