Ford Country Squire Map Light Bulb Size

The Ford Country Squire map light utilizes bulb sizes 63, 67, 89, 105, 214-2, 631, 912, and 1003 across various production periods. Available data covers the range from 1953 to 1991.

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
1990-1991	105
1988-1989	912
1987	105
1974	1003
1973	214-2
1967-1970	631
1962-1966	1003
1959-1960	89
1956-1957	67
1953-1955	63

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 13W.	105
ANSI standard (US & Canada). Wedge bulb (T15). Variant of 921. 12V, 12W.	912
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1003
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	214-2
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 21W.	631
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

Other Locations

Additional Notes

The Ford Country Squire map light specifications span model years 1953 through 1991, with eight distinct bulb sizes appearing across that range: 63, 67, 89, 105, 214-2, 631, 912, and 1003.
The 1003 bulb is the most frequently specified size in the Ford Country Squire map light data, covering model years 1962-1966 and 1974. It is a single-filament bulb with a BA15s bayonet base rated at 12V and 21W.
The 631 bulb appears across model years 1967-1970 and shares the same BA15s bayonet base and 12V, 21W rating as the 1003, though it is classified as a variant of the 1156 family rather than a direct equivalent.
The 105 bulb is specified for the 1987 and 1990-1991 model years. It operates at 12V and 13W with a BA15s bayonet base and is a variant of the 1156 bulb family.
The BA15s bayonet base is the most prevalent base type across the specifications, appearing in the 105, 631, 1003, 89, and 67 bulb types. Despite sharing the same base, these bulbs differ in wattage and are not universally interchangeable.
The 912 wedge bulb (T15 form factor) is specified for 1988-1989 and represents a physically distinct base type from all other bulbs in the data. As a variant of the 921, it operates at 12V and 12W but uses a wedge-style socket rather than a bayonet mount.
The 214-2 festoon bulb, specified for the 1973 model year, uses an SV8.5 base and a 41mm length format. Its festoon construction differs fundamentally from both the bayonet and wedge types found elsewhere in the specifications, making it incompatible with those socket types.
The 89 bulb, used in 1959-1960, and the 67 bulb, used in 1956-1957, both carry a BA15s bayonet base but are lower-wattage variants of the 1156 family, rated at 13W and 8W respectively. The wattage difference between these and higher-rated BA15s bulbs such as the 1003 or 631 means substitution between them is not indicated by the specifications.
The 63 bulb, specified for 1953-1955, is the lowest-rated bulb in the data at 12V and 0.63W. It uses a BA9s base, which is a smaller bayonet fitting than the BA15s and is physically incompatible with BA15s sockets.
Across the 1987-1991 model years, the Ford Country Squire map light alternates between the 105 (BA15s bayonet) and 912 (T15 wedge) bulb types, indicating that the socket type changed between certain model years and that bulbs from one socket family cannot be fitted into the other.