Oldsmobile Aurora Map Light Bulb Size

The Oldsmobile Aurora map light requires bulb sizes 578, 168, 211-2, or 906 depending on the specific vehicle configuration. Available data for the bulb specifications covers the period from 1995 through 2003.

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
2001-2003	578
1999	168
1998	211-2
1997	168
1995-1996	906

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V, 12W.	578
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	211-2
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 8W.	906

Other Locations

Additional Notes

The Oldsmobile Aurora map light specifications cover model years 1995 through 2003, with four distinct bulb sizes appearing across that span: 578, 168, 211-2, and 906.
The 578 bulb is the most frequently specified type, covering the 2001-2003 Aurora map light position across three consecutive model years.
Bulb 578 is a festoon-style unit with end-cap contacts, operating at 12V and 12W. Festoon bulbs make electrical contact through metal caps at each end rather than through a base socket.
The 211-2 bulb, specified for the 1998 Aurora, is also a festoon type at 12V and 12W, but it uses an SV8.5 base rather than end-cap contacts. Despite sharing the same voltage and wattage as the 578, the differing base type makes the two bulbs non-interchangeable.
The 168 bulb appears in the 1997 and 1999 Aurora specifications. It is a T10 miniature wedge type rated at 12V and 4.9W, making it the lowest-wattage bulb among those listed for this vehicle.
The 906 bulb is specified for the 1995-1996 Aurora. It is also a T10 miniature wedge type, but it operates at 12V and 8W, drawing notably more power than the 168 despite sharing the same physical wedge base format.
Because the 168 and 906 are both T10 wedge bulbs, they share a physically compatible base, but their wattage ratings differ (4.9W versus 8W), which is a relevant electrical distinction for the map light circuit.
All four bulb types in these specifications conform to ANSI standards applicable in both the United States and Canada.