Chevrolet Beretta Radio Display Bulb Size

The Chevrolet Beretta radio display requires bulb size 37 or 168 depending on the specific component version. 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
1987-1988	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 Chevrolet Beretta radio display uses two distinct bulb types across its model years: the 37 and the 168, both of which are ANSI-standard miniature wedge bulbs rated at 12 volts.
The 37 bulb follows a T5 wedge form factor and draws 1 watt, making it a lower-output unit relative to the 168.
The 168 bulb uses a T10 wedge form factor and draws 4.9 watts, placing it in a physically larger and higher-wattage category than the 37.
The 1987-1988 Beretta radio display takes the 168 bulb, while the 1990 model uses the 37 bulb instead.
The T5 and T10 designations refer to the bulb's tubular envelope width, measured in eighths of an inch, meaning the T10 body is notably wider than the T5 body. These two types are not interchangeable despite sharing the same wedge base style.
The wattage difference between the 37 and 168 means the socket and circuit in each respective model year is matched to a specific power draw, and substituting one for the other risks either insufficient illumination or electrical incompatibility.