The White WX features front side marker bulbs in 1157 and 194 sizes, with rear side marker bulbs in 194 size. The replacement chart covers vehicle production spanning 1981 to 1988 with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 194 bulb is a miniature wedge type with a T10 form factor, operating at 12V and drawing 3.78W. It follows the ANSI standard recognized in both the United States and Canada.
The 1157 bulb is a dual-filament type with a BAY15d bayonet base, rated at 12V with a 21W/5W output. It also conforms to the ANSI standard used in the United States and Canada.
The dual-filament design of the 1157 means it serves two independent electrical circuits within a single bulb, typically supporting both a running light function and a brighter signaling function.
The White WX front side marker uses the 194 bulb for model years 1981-1987, with the fitment restricted to units designated as "Except Conventional."
For the 1988 model year, the White WX front side marker transitions to the 1157 bulb, which carries no trim-level restriction.
The rear side marker on the White WX uses the 194 bulb across all listed model years from 1981-1988, though the 1981-1987 fitment is limited to "Except Conventional" configurations.
The 1988 rear side marker uses the 194 bulb without any trim-level restriction, distinguishing it from the 1981-1987 rear fitment entries.
The "Except Conventional" qualifier on the 1981-1987 front and rear side marker entries indicates that vehicles of the conventional body style require a different bulb specification not shared with other WX configurations.
The front and rear side markers share the same 194 bulb specification for the 1981-1987 "Except Conventional" fitment, meaning both positions are interchangeable in terms of bulb type for those years and configurations.
The front and rear side markers diverge in bulb type for the 1988 model year, with the front position requiring the larger, dual-filament 1157 and the rear retaining the single-filament 194, making the two positions non-interchangeable that year.