Mitsubishi 3000GT Map Light Bulb Size

The Mitsubishi 3000GT map light requires bulb size 12961 or DE3175 depending on the specific vehicle configuration. Data for the provided bulb sizes covers the range from 1995 through 1999.

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
1996-1999	12961
1995	DE3175

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.	DE3175

Other Locations

Additional Notes

The Mitsubishi 3000GT uses two distinct map light bulb types across its model years, with the 12961 specified for 1996-1999 and the DE3175 specified for 1995.
The 12961 is a Philips part number designating a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12 volts and 5 watts.
The T10 designation refers to the bulb's tubular glass envelope, while the W2.1x9.5d base describes a wedge-style fitting where the glass itself acts as the retaining mechanism rather than a separate metal base.
The DE3175 follows the ANSI standard used in the United States and Canada, classifying it as a festoon bulb with a 31mm length and end-cap contacts at each end of the tube.
Festoon bulbs make electrical contact through metal caps pressed against spring-loaded holders, a mounting method that differs fundamentally from the wedge retention of the 12961.
The two bulb types are not interchangeable, as the 12961 uses a wedge base and the DE3175 uses end-cap contacts, representing physically incompatible socket designs.
The 12961 carries an operating voltage of 12 volts and a wattage of 5W, consistent with standard automotive low-current interior lighting applications.
The DE3175 is rated at 12 volts, and its wattage is not specified in the provided data.