The Saab 9000 dome light requires a 6411 bulb size for proper illumination within the interior cabin area of the vehicle. Data for the specific component covers the span from 1986 through 1998.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Saab 9000 dome light relies on three distinct bulb types across its model years: the 6411, DE3423, and 12961, each with different base types and physical forms.
The 6411 is a festoon bulb operating at 12V and 5W, built to ANSI standards for the US and Canadian markets. It uses an SV8.5 base and measures 36mm in length.
The DE3423 is also a festoon bulb conforming to ANSI standards, operating at 12V. It is slightly longer than the 6411 at 41mm and uses end-cap contacts rather than a pin-style base.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor. It uses a W2.1x9.5d base and operates at 12V and 5W, making it physically incompatible with festoon sockets.
The 6411 serves as the dome light bulb for the Saab 9000 across the 1986-1992 and 1996-1998 model years, representing the widest fitment range among the three bulb types in these specifications.
For the 1996-1998 model years, the 9000 uses separate front and rear dome light bulbs, with the front position requiring the DE3423 and the rear position requiring the 12961.
The DE3423 and 6411 are both festoon bulbs but are not interchangeable. The 6mm difference in length and the distinction between end-cap contacts and an SV8.5 pin base mean each fits only its designated socket.
The wedge base of the 12961 is a fundamentally different mounting system from the festoon bases used by the 6411 and DE3423, and the bulb types cannot be substituted for one another regardless of voltage or wattage similarity.