INFINITI M35h Map Light Bulb Size

The INFINITI M35h map light uses bulb size 12961 and bulb size 89 for the interior lighting system. Data for the specific bulbs covers the range from 2012 to 2013.

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
2012-2013	12961 (Driver side and Passenger side)
2012-2013	89 (Front)

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W.	89

Other Locations

Additional Notes

The INFINITI M35h map light system uses two distinct bulb types across its positions: the 12961 for the driver and passenger sides, and the 89 for the front position.
Both bulb types appear across the full 2012-2013 model year range of the M35h without variation in the specified positions.
The 12961 is a Philips part number designation for a T10 miniature wedge bulb, operating at 12V and 5W with a W2.1x9.5d base.
The W2.1x9.5d base is a wedge-style connection where the bulb pins directly into a socket without a separate locking mechanism, relying on tension from the socket walls to maintain contact.
The 89 is an ANSI-standard bulb recognized in both the US and Canada, rated at 12V and 13W, and uses a BA15s single-contact bayonet base.
The BA15s bayonet base features a single contact pin on the base and is not interchangeable with the BA15d double-contact bayonet base, which carries a visually similar but electrically distinct design.
The 89 bulb is a lower-wattage variant of the 1156, meaning the two share the same BA15s bayonet base but differ in wattage, which makes them physically interchangeable in socket fit while differing in electrical draw.
The T10 wedge format of the 12961 and the BA15s bayonet format of the 89 are mechanically incompatible base types, meaning the two bulbs serve entirely separate socket designs within the same map light assembly.