INFINITI Q50 Map Light Bulb Size

Additional Notes

• 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 shape, while the W2.1x9.5d base describes a wedge-type connection with no separate metal contacts, relying instead on the glass envelope itself to make electrical contact within the socket.
• The Infiniti Q50 uses the 12961 bulb across all listed model years from 2014-2024, making it the sole map light bulb size represented in these specifications.
• For the 2014-2016 model years, the specifications explicitly note separate driver side and passenger side fitment positions, indicating the map light assembly uses two individually replaceable bulbs.
• The 2018-2019 entries carry a "Side" designation rather than specifying driver or passenger positions individually, which reflects a different labeling convention in the fitment data for those years.
• The 2021 and 2023-2024 entries list the 12961 without a positional qualifier, though the bulb size itself remains unchanged from earlier years.
• The W2.1x9.5d wedge base is a standardized international base type, meaning the 12961 is interchangeable with other T10 wedge bulbs sharing that base configuration, provided the voltage and wattage ratings are matched.
• At 5 watts and 12 volts, the 12961 draws approximately 0.42 amperes, which is consistent with low-current interior lighting circuits typical of map light applications.