Pontiac Sunfire Map Light Bulb Size

The Pontiac Sunfire map light requires bulb size 168 or 192 depending on the specific version of the vehicle. Data for the bulb sizes covers the range from 1995 to 2005.

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
1998-2005	168
1995-1997	192

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W.	192

Other Locations

Additional Notes

The Pontiac Sunfire map light uses one of two bulb sizes across its model years: the 168 for 1998-2005 and the 192 for 1995-1997.
Both the 168 and 192 are ANSI-standardized bulbs recognized in the United States and Canada, meaning they conform to a defined set of electrical and physical standards.
Both bulbs share the same T10 miniature wedge form factor, a small wedge-shaped base that requires no separate socket retainer and is held in place by spring tension alone.
Both bulbs also operate on a 12-volt circuit, which is consistent with standard automotive electrical systems.
Despite the shared T10 form factor and identical voltage rating, the two bulbs differ in wattage. The 168 draws 4.9W while the 192 draws 3W, meaning they are not electrically interchangeable even though they physically fit the same socket type.
The higher wattage of the 168 produces greater light output than the 192, a consequence of the direct relationship between wattage and luminous intensity in incandescent bulbs.
The shift from the 192 to the 168 occurred between the 1997 and 1998 model years of the Pontiac Sunfire, representing a change to a higher-wattage bulb for the map light position.