Mercedes-Benz 380SEC Dome Light Bulb Size

The Mercedes-Benz 380SEC dome light requires a 6411 bulb size for proper illumination within the interior cabin area. Data for the specific bulb requirements covers the range from 1982 to 1983.

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
1982-1983	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 6411 is the sole bulb type listed for the Mercedes-Benz 380SEC dome light across both available model years, covering 1982-1983.
The 6411 follows the ANSI standard, meaning it conforms to the American National Standards Institute classification system used in the United States and Canada.
The 6411 is a festoon-style bulb, a cylindrical form factor that seats by pressing both ends into spring-loaded metal clips rather than inserting into a socket.
The bulb measures 36mm in length, which is the end-to-end span relevant to festoon clip fitment.
The 6411 uses an SV8.5 base, a designation that refers to the metal contact caps at each end of the festoon body, with 8.5 indicating the cap width in millimeters.
The electrical rating is 12 volts and 5 watts, consistent with standard low-draw interior lighting in 12-volt automotive systems.