White WCL Back Up Light Bulb Size

The White WCL back up light utilizes a single 1156 bulb size for all listed applications within the provided technical data set. Available information covers a specific range from 1981 through 1988 for the specified vehicle and lighting component.

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
1981-1988	1156

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156

Other Locations

Additional Notes

The 1156 is the sole back up light bulb size listed for the White WCL across the 1981-1988 model years.
The 1156 is a single-filament bulb, meaning it serves one lighting function rather than combining two, such as stop and tail duties.
It operates on a 12-volt electrical system and draws 21 watts.
The 1156 uses a BA15s bayonet base, a single-contact fitting where the "s" denotes a single pin, distinguishing it from the dual-contact BA15d variant.
The BA15s base requires correct pin alignment during installation, as the single-pin design does not allow rotation into an incorrect position the way a dual-pin base might.
The 1156 conforms to ANSI standards recognized in both the United States and Canada, placing it within a widely adopted North American specification framework.