Ford Fiesta Parking Brake Indicator Bulb Size

The Ford Fiesta parking brake indicator bulb uses a 194 size bulb for this component. The replacement chart covers vehicle production spanning 1978 to 1980.

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
1978-1980	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

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Additional Notes

The 194 bulb is the sole parking brake indicator bulb size listed for the Ford Fiesta across the 1978-1980 model years.
The 194 is an ANSI-standardized bulb used in the United States and Canada, classified as a miniature wedge type in the T10 form factor.
The T10 wedge base design allows the bulb to be inserted and removed without a socket twist, relying on spring tension from the housing to maintain contact.
The 194 bulb operates at 12 volts with a power draw of 3.78 watts, placing it in the low-wattage range typical of instrument panel and indicator lighting.
Because the 194 follows an ANSI standard, it is produced by multiple manufacturers to the same electrical and physical specification, meaning units from different brands are generally interchangeable provided the base type and voltage rating match.