Ford Explorer Turn Signal Indicator Bulb Size

The Ford Explorer turn signal indicator utilizes bulb sizes 194, PC194, and PC74 depending on the specific version of the vehicle. Available data for the components covers the range from 1991 to 2005.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2002-2005	PC74
2001	PC194
1991-2000	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T5) with printed circuit board twist-lock socket, for instrument clusters. 12V, 1.4W.	PC74
ANSI standard (US & Canada). Miniature wedge bulb (T10) with printed circuit board twist-lock socket, for instrument clusters. 12V, 3.78W.	PC194
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

Other Locations

Additional Notes

The Ford Explorer turn signal indicator bulb specifications cover model years 1991 through 2005, with two distinct bulb types used across that span.
The 194 bulb is the most frequently specified type, covering the Ford Explorer from 1991 through 2000. It is an ANSI-standard miniature wedge bulb in the T10 form factor, rated at 12V and 3.78W.
The PC74 bulb is specified for model years 2002-2005. It is an ANSI-standard miniature wedge bulb in the smaller T5 form factor, rated at 12V and 1.4W, and uses a printed circuit board twist-lock socket designed for instrument cluster applications.
The T5 form factor of the PC74 is physically smaller than the T10 form factor shared by the 194 and PC194, which makes these bulb families non-interchangeable by size alone.
The PC74 and PC194 both feature a printed circuit board twist-lock socket, a mounting interface distinct from the standard wedge base of the 194 bulb.
The 2001 Ford Explorer is specified with the PC194 bulb, a T10 miniature wedge type rated at 12V and 3.78W with a printed circuit board twist-lock socket. This socket type differs from the plain wedge base of the 194 bulb used in prior years, despite both sharing the T10 form factor and identical wattage ratings.
Because the PC194 and 194 share the same T10 form factor and 3.78W rating but differ in socket type, physical fitment into a printed circuit board socket is not guaranteed when substituting one for the other.
The wattage difference between the PC74 at 1.4W and the PC194 or 194 at 3.78W reflects a meaningful difference in power draw, which is relevant when considering socket and circuit compatibility.