The White WHM features front and rear side marker bulbs with a 194 size specification across both locations. The replacement chart covers vehicle production spanning 1981 to 1987.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 194 bulb is the sole side marker bulb type listed for the White WHM across both front and rear positions for the 1981 and 1984-1987 model years.
The 194 is a miniature wedge bulb of the T10 form factor, operating at 12 volts with a power draw of 3.78 watts.
The 194 carries ANSI standardization recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical criteria shared across those markets.
The T10 wedge base design relies on the bulb's plastic wedge-shaped base to make electrical contact directly within the socket, with no separate metal base or pins involved.
At 3.78 watts, the 194 falls within the low-wattage range typical of side marker applications, where illumination rather than high output is the primary function.
The fitment notation "Except Conventional" applies uniformly to all listed model years and both marker positions on the White WHM, indicating that the 194 bulb size is specific to non-conventional configurations of this vehicle.
Because the T10 wedge socket is a standardized form factor, multiple bulb part numbers from different manufacturers may share physical and electrical compatibility with the 194 designation, provided they meet the 12V and 3.78W ratings.