Kia Spectra5 Map Light Bulb Size

Additional Notes

• The Kia Spectra5 map light uses two distinct bulb sizes across its production years, with the 904 fitted to 2007-2009 models and the 168 fitted to 2005-2006 models.
• Both the 904 and 168 are ANSI-standardized bulbs recognized in the United States and Canada, meaning they conform to a defined set of electrical and physical specifications.
• Both bulbs share the same T10 miniature wedge form factor, a small single-contact base type commonly used in interior and low-load automotive lighting applications.
• Both bulbs operate at 12 volts, which is consistent with standard automotive electrical systems.
• The 904 bulb is rated at 8 watts, while the 168 is rated at 4.9 watts, meaning the 904 draws noticeably more power and produces greater luminous output than the 168.
• Although the 904 and 168 share the same T10 wedge base and are physically interchangeable in terms of socket fit, their wattage difference makes them electrically distinct and not direct substitutes for one another.
• The 2007-2009 front map light position specifies the 904, indicating that the later production years of the Spectra5 were designed around a higher-wattage output for that application.
• The T10 wedge base is a push-in type with no separate metal contacts, relying instead on the tapered plastic base to make electrical contact within the socket.