Chevrolet Corsica Radio Display Bulb Size

The Chevrolet Corsica radio display requires bulb size 37 or 168 depending on the specific configuration of the internal lighting components. Data for the bulb sizes covers the range from 1987 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	37
1987	168

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 1W.	37
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

The 1987 Chevrolet Corsica uses a 168 bulb for the radio display, while the 1990 model uses a 37 bulb. These are distinct bulb types and are not interchangeable with each other.
Both the 37 and 168 are ANSI-standardized miniature wedge bulbs rated at 12 volts, making them compatible with standard 12V automotive electrical systems.
The 168 bulb is a T10 wedge type rated at 4.9 watts, giving it a notably higher power draw than the 37 bulb used in the 1990 model.
The 37 bulb is a T5 wedge type rated at 1 watt, making it a lower-output bulb relative to the 168. The T5 designation refers to a smaller wedge base than the T10 found in the 168.
The physical size difference between the T5 and T10 wedge bases means the two bulb types occupy different socket sizes and cannot be substituted for one another, even though both operate at 12 volts.
Both bulb types meet ANSI standards applicable in the United States and Canada, meaning replacements sourced from either market are expected to conform to the same specifications.