Ford Skyliner Map Light Bulb Size

The Ford Skyliner map light requires bulb size 89, bulb size 67, or bulb size 63 depending on the specific version. Data for the provided components covers the range from 1954 to 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 Size
1959	89
1956-1957	67
1954-1955	63

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W.	89
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 8W.	67
ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 0.63W.	63

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Additional Notes

The Ford Skyliner map light specifications span model years 1954 through 1959, covering three distinct bulb types across that range.
The bulb 67 is an ANSI-standard single-filament type with a BA15s bayonet base, rated at 12V and 8W. It is specified for the Ford Skyliner for the 1956-1957 model years.
The bulb 63 is an ANSI-standard type with a BA9s base, rated at 12V and 0.63W. It is specified for the 1954-1955 model years, making it the lowest-wattage bulb in this set of specifications.
The bulb 89 is an ANSI-standard single-filament type with a BA15s bayonet base, rated at 12V and 13W. It is specified exclusively for the 1959 Ford Skyliner map light.
Both the 67 and 89 bulbs share the BA15s bayonet base and are described as lower-wattage variants of the 1156. Despite this shared base type, their wattage ratings differ significantly, at 8W and 13W respectively, which makes them non-interchangeable for this application.
The bulb 63 uses a BA9s base, which is a physically different fitting from the BA15s base used by the 67 and 89 bulbs. This base difference means the 63 is not interchangeable with either of the other two bulb types in these specifications.
All three bulb types in these specifications are ANSI standards applicable to the US and Canadian markets.