The Volvo WX uses 1156 bulbs for both front and rear turn signal applications, with this bulb size remaining consistent across the model line. The replacement chart covers 1996 to 1998 production years and details bulb size specifications for turn signal positions.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 1156 is the sole bulb type across all listed positions and model years for the Volvo WX, covering both the front and rear turn signal applications from 1996-1998.
The 1156 is a single-filament bulb, meaning it is dedicated to one lighting function rather than serving dual purposes such as combined stop and tail duties.
The 1156 operates at 12 volts and 21 watts, which is consistent with standard automotive electrical systems and typical turn signal brightness requirements.
The BA15s bayonet base is a single-contact bayonet fitting, and the "s" designation indicates a single contact pin offset, which distinguishes it from the dual-contact BA15d base used in other bulb types.
The 1156 conforms to ANSI standards applicable in the United States and Canada, reflecting a North American market specification for the Volvo WX across the 1996-1998 model years.
Because the BA15s base is a single-contact design, it is not interchangeable with visually similar bulbs that use a dual-contact bayonet base, such as the 1157, despite sharing a comparable physical form.