Austin Mini Cooper License Plate Bulb Size

The Austin Mini Cooper license plate light requires 1895 and 57 bulb sizes according to the provided data. Information for the specified lighting components covers the period from 1964 to 1969.

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
1969	1895
1964-1967	57

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 0.9W.	1895
ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 1W.	57

Other Locations

Additional Notes

The Austin Mini Cooper license plate bulb specifications cover model years 1964-1969, with two distinct bulb types used across that span.
The 1895 bulb is a T5 miniature wedge type operating at 12V and 0.9W. It follows the ANSI standard applicable to the US and Canadian markets.
The T5 designation refers to a tubular bulb body that is 5/8 of an inch wide. The wedge base means the glass envelope itself acts as the retention mechanism, with no separate metal base.
The 57 bulb is a single-filament type with a BA9s base, also rated at 12V but drawing 1W. It likewise conforms to the ANSI standard for US and Canadian markets.
A BA9s base is a miniature bayonet cap with a 9mm collar. It differs fundamentally from a wedge base, meaning the 57 and 1895 bulbs are not interchangeable.
The Austin Mini Cooper (1964-1967) uses the 57 bulb for the license plate position, while the 1969 model year uses the 1895 bulb instead.
The wattage difference between the two bulbs is small, 0.9W for the 1895 versus 1W for the 57, but the incompatible base types remain the primary fitment constraint.
Both bulb types operate on a 12V electrical system, consistent with the standard automotive voltage of that era.