Ford Skyliner License Plate Bulb Size

The Ford Skyliner license plate light requires 63 and 67 bulb sizes for the specific lighting components located at the rear of the vehicle. Data for the bulb specifications covers the period from 1954 through 1959.

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 Type	Shop
1956-1959	67	Check Price
1954-1955	63	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 8W.	67	Check Price
ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 0.63W.	63	Check Price

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Additional Notes

The Ford Skyliner license plate bulb specifications cover the 1954-1959 model years, with two distinct bulb types used across that span: the 67 and the 63.
The bulb 67 is an ANSI-standard single-filament bulb rated at 12V and 8W, fitted with a BA15s bayonet base. It is recognized as a lower wattage variant of the widely known 1156 bulb.
The BA15s base on the 67 bulb is a single-contact bayonet fitting, which is not interchangeable with double-contact bayonet bases such as the BA15d used on other common automotive bulbs.
The bulb 63 is an ANSI-standard single-filament bulb rated at 12V and 0.63W, fitted with a BA9s base. Its wattage is substantially lower than that of the 67, reflecting a different design intent and socket type.
The BA9s base on the 63 bulb is a miniature single-contact bayonet fitting. It is physically incompatible with the BA15s base used on the 67, making the two bulb types non-interchangeable.
The Ford Skyliner (1956-1959) uses the 67 bulb for the license plate position, while the 1954-1955 model years use the 63 bulb instead.
The transition from the 63 to the 67 between the 1955 and 1956 model years represents a shift to a higher-wattage bulb with a larger base format, which affects socket compatibility for replacement purposes.