Dodge W150 front and rear side marker bulbs both utilize a 194 bulb size for proper illumination. The replacement chart covers 1977 through 1993 model years 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 the sole bulb size specified for both the front and rear side marker positions on the Dodge W150.
The 194 bulb follows the ANSI standard recognized in both the United States and Canada, placing it within a regulated specification framework for miniature automotive lighting.
It is a T10 miniature wedge-base bulb, meaning it uses a wedge-style base rather than a bayonet or screw fitting, and seats directly into a compatible wedge socket without a separate metal base.
The 194 bulb operates at 12 volts and draws 3.78 watts, classifying it as a low-wattage indicator bulb rather than a primary illumination source.
The front side marker position on the Dodge W150 uses the 194 bulb across the 1977-1993 model years.
The rear side marker position uses the same 194 bulb, with specifications covering the 1986-1991 model years.
The shared 194 bulb size across both front and rear positions means a single bulb type serves both marker locations on the years where rear side marker data is present.
The T10 wedge form factor is a widely used miniature bulb standard, and the 194 designation specifically identifies a variant within that family defined by its voltage and wattage rating. Substituting a different T10 variant with a different wattage could affect circuit compatibility.