Pontiac G6 Map Light Bulb Size

The Pontiac G6 map light requires a bulb size of 168 for the interior lighting system. Data for the specified component covers the range from 2005 to 2010.

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
2010	168
2005	168

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

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Additional Notes

The T10 miniature wedge is the bulb type used across the Pontiac G6 map light application. It operates at 12 volts and draws 4.9 watts, placing it in the low-wattage range typical of interior courtesy and map lighting.
The 168 designation follows ANSI standardization recognized in both the United States and Canada, meaning the bulb conforms to a defined set of electrical and physical parameters rather than being a proprietary specification.
The T10 designation refers to the bulb's tubular envelope, with the number indicating a width of 10 eighths of an inch. The wedge base type eliminates the need for a separate metal base, as the glass envelope itself forms the electrical contact points.
The Pontiac G6 (2005 and 2010) uses the 168 bulb size for the map light position in both model years, indicating consistent fitment across that portion of the vehicle's production run.
The wedge base format of the 168 bulb is shared with several other common automotive bulb types, including the 194 and 2825. However, these alternatives carry different wattage ratings, and substituting them affects the power draw at that socket.