Acura TL Map Light Bulb Size

The Acura TL map light utilizes 12961 and DE3022 bulb sizes for the interior lighting components. Available data for the specified vehicle covers the range from 1995 through 2006.

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
1999-2006	12961
1995-1998	DE3022

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3022

Other Locations

Additional Notes

The Acura TL map light draws from two distinct bulb types across its model years: the 12961 wedge-style bulb and the DE3022 festoon-style bulb.
The 12961 is a Philips part number designating a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W.
The T10 designation refers to the bulb's tubular shape, while the W2.1x9.5d base describes a wedge-type connection where the bulb's plastic base itself acts as the socket contact, requiring no separate metal pins.
The DE3022 follows the ANSI standard recognized in the United States and Canada, classifying it as a festoon bulb with a 31mm length and end-cap contacts at both terminals.
Festoon bulbs make electrical contact through metal caps at each end of the bulb body, a fundamentally different mounting and contact method from the wedge base used by the 12961.
The Acura TL (1999-2006) uses the 12961 wedge bulb for the map light position.
The 1995-1998 model years use the DE3022 festoon bulb instead, reflecting a different map light socket design in that generation of the TL.
The two bulb types are not interchangeable, as the wedge base and festoon end-cap contact systems are physically incompatible with each other's sockets.