Ford F-750 License Plate Bulb Size

The Ford F-750 license plate light uses 3157 and 194 bulb sizes according to the provided specifications for the vehicle lighting system. Data for the bulb sizes covers the range from 2000 to 2022.

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	Bulb Size
2021-2022	3157
2017-2019	194
2000-2003	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.	3157
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

Other Locations

Additional Notes

The Ford F-750 license plate position uses two distinct bulb types across its model years: the 194 and the 3157, both of which conform to ANSI standards recognized in the United States and Canada.
The 194 bulb is a miniature wedge type with a T10 form factor, rated at 12V and 3.78W, placing it among the lower-wattage bulbs used in automotive lighting applications.
The 3157 bulb is a dual-filament wedge type with a T25 form factor, rated at 12V with a 27W/7W output split between its two filaments, making it a significantly higher-wattage component than the 194.
The dual-filament design of the 3157 means it contains two separate circuits within a single housing, a characteristic that distinguishes it electrically and physically from the single-filament 194.
The Ford F-750 (2021-2022) uses the 3157 bulb for the license plate position, while the 2000-2003 and 2017-2019 model years use the 194 bulb for the same position.
The T25 and T10 designations refer to the tubular envelope sizing of each bulb, with T10 being the smaller of the two, which means the 3157 and 194 are not physically interchangeable despite sharing the same 12V operating voltage.
The wattage difference between the two bulb types is substantial, with the 3157 drawing up to 27W on its primary filament compared to the 194's 3.78W, indicating different socket and circuit requirements between the affected model years.