Ford LTD Dome Light Bulb Size

The Ford LTD dome light utilizes unique bulb sizes 912, 906, 89, 211-2, 561, 105, and 1003 depending on the specific production version. Available data covers the range from 1965 to 1986.

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
1984-1986	912
1982-1983	906
1981	912
1980	906
1979	89
1976-1978	211-2
1975	561
1974	211-2
1972-1973	561
1970-1971	105
1965-1969	1003

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Wedge bulb (T15). Variant of 921. 12V, 12W.	912
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 8W.	906
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W.	89
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	211-2
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	561
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 13W.	105
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1003

Other Locations

Additional Notes

The Ford LTD dome light specifications span model years 1965 through 1986, covering seven distinct bulb types across that period.
The 211-2 festoon bulb is the most frequently specified type in the Ford LTD dome light fitment data, appearing in the 1974, 1976-1978 model years. It is an ANSI-standard festoon bulb with an SV8.5 base, a 41mm length, and a 12V, 12W rating.
The 1003 bulb covers the 1965-1969 model years, making it the second most recurring type in these specifications. It is a single-filament bulb with a BA15s bayonet base rated at 12V and 21W, which is notably higher wattage than most other bulb types listed for this vehicle.
The 561 festoon bulb is specified for the 1972-1973 and 1975 model years. It shares the same 12V, 12W rating as the 211-2 but has a slightly longer 44mm length and uses end-cap contacts rather than an SV8.5 base, making the two festoon types physically non-interchangeable despite their identical electrical ratings.
The 912 wedge bulb (T15) is specified for the 1981 and 1984-1986 model years. It is a variant of the 921 bulb and carries a 12V, 12W rating. The wedge base design differs fundamentally from the bayonet and festoon bases used in earlier LTD model years.
The 906 miniature wedge bulb (T10) is specified for the 1980, 1982-1983 model years. At 8W, it is the lowest-wattage bulb in these specifications. Although it shares the wedge base form factor with the 912, the T10 and T15 sizes are not interchangeable.
The 1979 Ford LTD uses the 89 bulb, a single-filament BA15s bayonet type rated at 12V and 13W. It is a lower-wattage variant of the 1156 bulb, and while it shares the same base type as the 105 and 1003 bulbs, wattage differences mean substitution between these bayonet types warrants attention.
The 105 bulb is specified for the 1970-1971 model years. Like the 89, it is a single-filament BA15s bayonet variant of the 1156 rated at 12V and 13W. The 89 and 105 share identical electrical ratings, though they carry separate ANSI designations.
All seven bulb types in these specifications are ANSI-standard parts applicable to the US and Canadian markets, operating on a 12V electrical system consistent with standard automotive use across the full 1965-1986 range.
The specifications reflect several base type transitions across the LTD's production history: BA15s bayonet bases in 1965-1971 and 1979, festoon bases in 1972-1978, and wedge bases in 1980-1986. Bulbs from different base categories are not interchangeable regardless of voltage or wattage compatibility.