Cadillac Catera Map Light Bulb Size

The Cadillac Catera map light requires a bulb size of 168 for proper installation and function within the interior lighting system. Data for the specified component covers the range from 1997 through 2001.

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
1997-2001	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 Cadillac Catera uses the 168 bulb size for the map light across all listed model years, spanning 1997-2001.
The 168 bulb is an ANSI-standardized type, meaning it conforms to a defined North American specification recognized in both the United States and Canada.
It belongs to the T10 miniature wedge family, a form factor characterized by a wedge-shaped base that seats directly into a socket without a separate metal cap or pins.
The 168 operates at 12 volts, which is consistent with standard automotive electrical systems.
Its rated wattage is 4.9W, placing it in the low-power range typical of interior courtesy and reading lamp applications.
The wedge base design of the T10 means the bulb is held in place by the tension of the socket contacts rather than a bayonet or screw mechanism, which affects how it is seated and removed.
Because the 168 is an ANSI-standardized bulb, it is produced by multiple manufacturers under the same designation, and units sharing that designation are generally interchangeable at the socket level.