Ford Tempo Dome Light Bulb Size

The Ford Tempo dome light requires bulb sizes 906 and 912 for proper illumination within the interior cabin area. Available data covers the production span from 1984 through 1994.

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
1992-1994	906
1990-1991	912
1984-1989	906

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 8W.	906
ANSI standard (US & Canada). Wedge bulb (T15). Variant of 921. 12V, 12W.	912

Other Locations

Additional Notes

The Ford Tempo dome light uses two distinct bulb types across its production years: the 906 and the 912.
The 906 is the more widely used of the two, fitted in the 1984-1989 and 1992-1994 model years.
The 906 is an ANSI-standard miniature wedge bulb in the T10 form factor, rated at 12 volts and 8 watts.
The 912 is an ANSI-standard wedge bulb in the T15 form factor, rated at 12 volts and 12 watts, making it a higher-wattage unit than the 906.
The 912 is a recognized variant of the 921 bulb, which shares the same T15 wedge base but may differ in wattage depending on the specific part.
The 1990-1991 Ford Tempo uses the 912 rather than the 906, meaning these two model years draw more wattage from the dome light circuit than the surrounding years.
The T10 and T15 designations refer to the tubular bulb body width, with T10 indicating a narrower profile than the T15, so the two bulb types are not physically interchangeable despite both using a wedge base.
Both the 906 and 912 conform to ANSI standards recognized in the United States and Canada, indicating standardized electrical and physical tolerances across manufacturers.