Ford Probe front side marker bulbs use 194 size, while rear side marker bulbs use either 168 or 194 bulb size specifications. The replacement chart covers vehicle production years spanning 1989 to 1997 with corresponding bulb size data.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ford Probe uses two ANSI-standard miniature wedge bulb types across its side marker positions: the 194 and the 168, both of which share the T10 form factor and a 12-volt operating voltage.
Although the 194 and 168 bulbs share the same T10 wedge base, they are not interchangeable, as the 194 is rated at 3.78 watts while the 168 draws 4.9 watts, representing a meaningful difference in power consumption.
The front side marker position on the Ford Probe uses the 194 bulb across the full 1992-1997 model year range covered by these specifications.
The rear side marker position on the 1993-1997 Ford Probe uses the 168 bulb, which draws more wattage than the 194 used in the front position of the same vehicles.
The rear side marker position on the 1989-1992 Ford Probe uses the 194 bulb, making front and rear positions consistent in bulb type for those model years.
The 1992 Ford Probe represents a transitional year in the rear side marker specification, as it is the final model year to use the 194 bulb in that position before the 168 was adopted from 1993 onward.
Both the 194 and 168 bulbs conform to ANSI standards recognized in the United States and Canada, indicating standardized electrical and physical tolerances for those markets.