Jaguar XJR Dome Light Bulb Size

The Jaguar XJR dome light requires a 6411 bulb size for proper installation and function within the interior lighting system. Available data for the specified vehicle covers the range from 1995 to 2017.

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
2014-2017	6411
2004-2009	6411
1995-1997	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 Jaguar XJR uses the 6411 bulb for the dome light across all model years listed in the specifications, spanning 1995-2009 and 2014-2017.
The 6411 is a festoon-type bulb, meaning it is cylindrical in shape and mounts by pressing its end caps into spring clips rather than using a twist or plug-in socket.
The 6411 bulb has a physical length of 36mm, which is a standard festoon size. Substituting a festoon bulb of a different length risks a poor fit within the dome light housing.
The base type for the 6411 is SV8.5, a designation that refers to the 8.5mm width of the metal end caps. A festoon bulb with a different cap width would not seat correctly in the XJR's dome light fixture.
The 6411 operates at 12 volts and draws 5 watts, consistent with standard automotive low-current interior lighting applications.
The 6411 carries ANSI standardization, meaning the designation is recognized across the United States and Canada and corresponds to a consistent set of physical and electrical specifications regardless of manufacturer.
Because the 6411 is an ANSI-standardized part, bulbs sold under that number by different manufacturers are expected to share the same voltage, wattage, length, and base type, making cross-brand substitution generally straightforward within that designation.