Oldsmobile Vista Cruiser Dome Light Bulb Size

The Oldsmobile Vista Cruiser dome light utilizes bulb sizes 561, 212-2, 211-2, and 161 across various production versions. Available information covers the specific time span from 1964 through 1975.

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
1975	561
1974	212-2
1973	211-2
1972	212-2
1971	161
1964-1970	211-2

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	561
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	212-2
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	211-2
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 1W.	161

Other Locations

Additional Notes

The dome light bulb specifications for the Oldsmobile Vista Cruiser span the 1964-1975 model years, covering four distinct bulb types across that range.
The 211-2 is the most frequently specified bulb in these records, appearing in the Vista Cruiser from 1964-1970 and again in 1973, making it the dominant fitment across this vehicle's production history.
The 211-2 and 212-2 are both ANSI-standard festoon bulbs sharing a 41mm length and SV8.5 base, operating at 12V and 12W. The SV8.5 base designation refers to a bayonet-style festoon cap with an 8.5mm width.
Despite their near-identical specifications, the 211-2 and 212-2 carry different ANSI designations, and fitment records for the Vista Cruiser treat them as distinct part numbers rather than interchangeable units.
The 1975 Vista Cruiser uses the 561 bulb, a festoon type with end-cap contacts rather than an SV8.5 base, at 44mm in length. This contact style differs structurally from the SV8.5 base used on the 211-2 and 212-2.
The 561 bulb's end-cap contact design means it is not a direct physical substitute for the SV8.5-based festoon bulbs specified in earlier model years, even though both operate at 12V and 12W.
The 1971 Vista Cruiser is specified with the 161 bulb, a T10 miniature wedge type rated at 12V and 1W. This wattage is substantially lower than the 12W rating of the festoon bulbs used in surrounding model years.
The T10 wedge form factor of the 161 bulb is physically incompatible with the festoon-style sockets used for the 211-2, 212-2, and 561 bulbs, as wedge bases seat into a different socket type entirely.
All four bulb types in these specifications conform to ANSI standards applicable in both the United States and Canada.
The 212-2 is specified for the 1972 and 1974 Vista Cruiser, with the 211-2 returning for 1973, indicating that the same model year range saw alternating use of two closely related but distinct festoon bulb designations.