Chevrolet Corsica Map Light Bulb Size

Additional Notes

• The Chevrolet Corsica map light bulb specifications span model years 1990 through 1996, with five distinct bulb sizes used across that range: 194, 168, 212-2, 192, and 561.
• The 192 bulb is the most frequently specified size across this range, appearing in the 1991-1993 model years. It is an ANSI-standard miniature wedge bulb in the T10 form factor, rated at 12V and 3W.
• The T10 wedge form factor appears across three of the five bulb types listed: the 192, 168, and 194. Despite sharing the same physical base style, these three bulbs carry different wattage ratings of 3W, 4.9W, and 3.78W respectively, which means they are not electrically identical.
• The remaining two bulb types, the 212-2 and the 561, are festoon-style bulbs. Festoon bulbs are cylindrical lamps that make contact at each end rather than through a wedge base, and they are physically incompatible with T10 wedge sockets.
• The 212-2 festoon bulb, specified for the 1994 Corsica, uses an SV8.5 base and has a 41mm length. It is rated at 12V and 12W, making it significantly higher in wattage than any of the T10 wedge types listed.
• The 561 festoon bulb, specified for the 1990 Corsica, uses end-cap contacts and has a 44mm length. It is also rated at 12V and 12W, but its 44mm length distinguishes it from the 212-2, and the two are not interchangeable despite sharing the same voltage and wattage.
• The 1996 Corsica uses the 194 bulb, and the 1995 model uses the 168. Both are T10 wedge types, but the 168 draws 4.9W compared to the 194 at 3.78W, so substituting one for the other would alter the current draw at the socket.
• All five bulb types listed carry ANSI standardization applicable to both the United States and Canada, meaning each size conforms to a defined specification rather than being a proprietary or manufacturer-exclusive part.