Ford Focus Map Light Bulb Size

Ford Focus map light bulb sizes include 6411 and 12961 specifications for the interior lighting component. The replacement chart covers 2008 to 2011 vehicle production years with corresponding bulb size data.

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
2011	6411
2009-2010	12961
2008	6411

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 36mm length, SV8.5 base. 12V, 5W.	6411
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961

Other Locations

Additional Notes

The Ford Focus map light uses two distinct bulb types across the 2008-2011 model years: the 6411 and the 12961, both rated at 12V and 5W.
The 6411 is an ANSI-standardized bulb used in the United States and Canada. It is a festoon-style bulb with a 36mm length and an SV8.5 base.
Festoon bulbs are cylindrical lamps that mount by pressing their end caps into spring clips rather than inserting into a socket, which is a physically distinct mounting method from wedge-style bulbs.
The 12961 is a Philips part number designation for a miniature wedge bulb in the T10 form factor, using a W2.1x9.5d base.
Wedge-base bulbs like the T10 are held in place by the tension of the socket contacts gripping the glass wedge at the base, with no separate metal base or pins involved.
Despite sharing the same 12V and 5W electrical ratings, the 6411 and 12961 are not interchangeable due to their fundamentally different base types and physical mounting configurations.
The Ford Focus (2008 and 2011) uses the 6411 festoon bulb for the map light position.
The 2009-2010 model years use the 12961 wedge bulb instead, indicating a mid-generation change in the map light socket design.