Peterbilt 372 Dome Light Bulb Size

The Peterbilt 372 dome light requires a bulb size of 97 for interior illumination. Data for the specified lighting component covers the range from 1989 through 1995.

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
1989-1995	97 (With 2 Rectangular Headlamps)

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 13W.	97

Other Locations

Additional Notes

The bulb size 97 is an ANSI-standard single-filament bulb rated at 12 volts and 13 watts, fitted with a BA15s bayonet base.
The BA15s base designation indicates a single-contact bayonet mount, which is not interchangeable with dual-contact bayonet bases used in other bulb families.
The 97 bulb is a variant of the 1156, meaning the two share the same base type, though they differ in wattage and are not direct substitutes for one another.
The Peterbilt 372 used the 97 bulb for the dome light across the 1989-1995 model years, exclusively in configurations with 2 rectangular headlamps.
The headlamp configuration qualifier indicates that vehicles with a different headlamp arrangement may require a separate fitment reference and should not be assumed to share the same dome light bulb specification.