Oldsmobile Vista Cruiser Map Light Bulb Size

The Oldsmobile Vista Cruiser map light requires bulb sizes 194 and 562 depending on the specific application. Data for the bulb sizes covers the range from 1968 to 1973.

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
1973	562
1971	194
1968	562

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	562
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

Other Locations

Additional Notes

The 1971 Oldsmobile Vista Cruiser uses a 194 bulb for the map light, while the 1968 and 1973 model years use a 562 bulb. These two bulb types are not interchangeable due to differences in both physical form and electrical draw.
The 562 is a festoon-style bulb with a 44mm length and end-cap contacts, meaning it seats by pressing lengthwise between two spring clips rather than inserting into a socket.
The 194 is a T10 miniature wedge bulb, which seats by pressing a wedge-shaped base directly into a friction-fit socket. This mounting method is physically incompatible with a festoon-style holder.
The 562 operates at 12 volts and 12 watts, making it a notably higher-wattage bulb relative to the 194, which operates at 12 volts and 3.78 watts.
Both the 562 and 194 are ANSI-standardized bulbs recognized in the United States and Canada, meaning replacements conforming to those designations are widely available across North American markets.
The 562 bulb's 44mm festoon length is a fixed specification. A festoon bulb of a different length would not seat correctly in the same holder, even if the voltage and wattage ratings matched.