Chevrolet Beretta Parking Brake Indicator Bulb Size

The Chevrolet Beretta parking brake indicator utilizes bulb sizes 74 and PC37 and PC74 across various production versions. Data for the specific component covers the period from 1987 through 1994.

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
1994	PC74
1991-1993	PC37
1987-1990	74

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T5) with printed circuit board twist-lock socket, for instrument clusters. 12V, 1.4W.	PC74
ANSI standard (US & Canada). Miniature wedge bulb (T5) with printed circuit board twist-lock socket, for instrument clusters. 12V.	PC37
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 1.4W.	74

Other Locations

Additional Notes

The parking brake indicator bulb specifications for the Chevrolet Beretta span the 1987-1994 model years and reference three distinct bulb types: the 74, PC37, and PC74.
All three bulb types conform to ANSI standards applicable in both the United States and Canada, and all are classified as T5 miniature wedge bulbs operating on a 12-volt circuit.
The 74 bulb is rated at 1.4 watts and uses a standard miniature wedge base, making it a straightforward T5 fitment without a specialized socket requirement.
The PC37 and PC74 bulbs share the T5 wedge form but are fitted with a printed circuit board twist-lock socket, a design specific to instrument cluster applications where the bulb locks into a PCB-mounted socket rather than a conventional holder.
The PC74 carries a 1.4-watt rating, matching the wattage of the standard 74 bulb, while the PC37 specification does not include a listed wattage value.
The Chevrolet Beretta used the standard 74 bulb for the 1987-1990 model years, after which the 1991-1993 models transitioned to the PC37, and the 1994 model adopted the PC74.
The printed circuit board socket on the PC37 and PC74 makes these bulbs non-interchangeable with the standard 74 despite sharing the same T5 wedge envelope, as the twist-lock mechanism requires a compatible PCB socket to seat correctly.
Although the PC74 and the standard 74 share the same wattage rating and T5 form, the socket type differs between them, and substituting one for the other is not supported by the fitment specifications.