Oldsmobile Cutlass Ciera Map Light Bulb Size

The Oldsmobile Cutlass Ciera map light utilizes bulb size 562, 561, 90, or 906 depending on the specific version of the interior lighting component. Data for the bulb sizes covers the range from 1983 to 1990.

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
1990	562
1989	561
1988	90
1987	906
1986	561
1984-1985	906
1983	90

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	562
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	561
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 13W.	90
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 8W.	906

Other Locations

Additional Notes

The Oldsmobile Cutlass Ciera map light specifications span the 1983-1990 model years and reference four distinct bulb types: 562, 561, 90, and 906.
The 906 bulb is the most frequently specified type across these years, covering the 1984, 1985, and 1987 model years. It is a miniature wedge bulb in the T10 form factor, rated at 12V and 8W.
The T10 wedge base used by the 906 bulb is a push-in fitment that does not require rotation during installation, a common trait of miniature wedge-type automotive bulbs.
The 561 and 562 are both festoon-type bulbs with a 44mm length and end-cap contacts, each rated at 12V and 12W. Festoon bulbs are held in place by spring clips at both ends rather than a socket base.
The 1986 and 1989 Cutlass Ciera share the 561 bulb specification, while the 1990 model uses the 562. Despite identical voltage and wattage ratings between the 561 and 562, they carry separate ANSI designations and are not listed as interchangeable within these specifications.
The 90 bulb, specified for the 1983 and 1988 model years, uses a BA15s bayonet base with a single-filament design, rated at 12V and 13W. The BA15s base features a single locating pin and requires a push-and-twist motion to seat into its socket.
At 13W, the 90 bulb carries the highest wattage of any bulb type listed in these specifications, drawing more power than both the 12W festoon types and the 8W 906 wedge bulb.
All four bulb types in these specifications conform to ANSI standards applicable in both the United States and Canada, indicating standardized performance and dimensional criteria across the listed part numbers.