Cadillac Catera Dome Light Bulb Size

The Cadillac Catera dome light requires a 6411 bulb size for proper installation and function within the interior lighting system. Data for the specified component covers the 1997 to 2001 range of production for the vehicle.

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	6411

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 36mm length, SV8.5 base. 12V, 5W.	6411

Other Locations

Additional Notes

The Cadillac Catera uses the 6411 bulb for the dome light across all listed model years, spanning 1997-2001.
The 6411 is classified as a festoon bulb, meaning it is cylindrical in shape and mounts by pressing its end caps into spring clips rather than inserting into a socket.
The 6411 carries an ANSI designation, indicating it meets a standardized specification recognized in both the United States and Canada.
The bulb operates at 12 volts and draws 5 watts, which is consistent with low-power interior lighting applications in passenger vehicles.
The 6411 has a 36mm length, which is the critical fitment factor for festoon bulbs, as the housing clip spacing must match this figure for proper installation.
The SV8.5 base type refers to the metal end caps on a festoon bulb, with the 8.5 indicating the cap width in millimeters.
Because the 6411 is an ANSI-standardized part, bulbs from different manufacturers carrying the same designation are expected to share the same physical and electrical characteristics.
Festoon bulbs of differing lengths are not interchangeable even when voltage and wattage ratings match, as an incorrect length will not seat properly in the spring clip housing.