The Ford Del Rio Wagon front and rear turn signal bulbs both utilize a 1034 size bulb for proper operation. The replacement chart covers 1957 to 1958 model years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 1034 bulb is the sole bulb type specified for the Ford Del Rio Wagon across all listed positions and years, appearing in both the front and rear turn signal applications for 1957-1958.
The 1034 is a dual-filament bulb, meaning it carries two separate filaments within a single envelope, allowing it to serve two distinct lighting functions at different wattages.
The 1034 operates at 12 volts with a 21/5W output rating, where the higher 21W filament handles the brighter turn signal flash and the lower 5W filament serves a secondary function such as a running or parking light.
The 1034 uses a BAY15d bayonet base, which is an offset twin-pin base design. The two pins are positioned at different heights to ensure the bulb can only be inserted in one orientation, preventing filament misassignment.
The 1034 is classified as an ANSI standard bulb recognized in both the United States and Canada, placing it within a standardized North American specification framework.
The 1034 is described as a variant of the 1157 bulb. While the two share the BAY15d base and dual-filament configuration, they are not identical, and substitution between them is not confirmed by these specifications.