Ford C7000 License Plate Bulb Size

The Ford C7000 license plate light uses a unique 1157 bulb size for the rear illumination system. Available data for the specified lighting component covers the range from 1971 to 1986.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	US Type	EU Type	Shop
1980-1986	1157	P21/5W	Check Price
1971	1157	P21/5W	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W.	1157	Check Price
ECE standard (Europe & worldwide). Dual-filament signalling bulb with BAY15d bayonet base. 12V, 21W/5W.	P21/5W	Check Price

Other Locations

Additional Notes

The Ford C7000 uses the 1157 bulb for its license plate across all listed model years, spanning 1980-1986 and 1971.
The 1157 is a dual-filament bulb, meaning it contains two separate filaments within a single glass envelope, each rated for a different wattage.
The two filaments in the 1157 operate at 21W and 5W respectively, with the lower-wattage filament typically serving a continuous illumination function and the higher-wattage filament serving a brighter signaling function.
The 1157 operates on a 12V electrical system, which is standard in passenger and commercial vehicles of this type.
The bulb uses a BAY15d bayonet base, a two-pin offset base design that prevents incorrect insertion by ensuring the pins are positioned at different heights.
The 1157 conforms to ANSI standards recognized in both the United States and Canada, indicating a standardized specification for electrical and photometric performance.
Because the 1157 is a dual-filament type, single-filament substitutes with the same base style are not electrically equivalent and would not replicate the same circuit behavior.