Ford Ranger Automatic Transmission Indicator Bulb Size

Ford Ranger automatic transmission indicator bulb uses a 194 size bulb for this component. The replacement chart covers vehicle production spanning 1991 to 2003.

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
1998-2003	194
1991-1993	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

Other Locations

Additional Notes

The Ford Ranger uses the 194 bulb for the automatic transmission indicator across all listed model years.
The 194 is an ANSI-standardized bulb type, meaning its specifications are governed by a recognized North American industry standard applicable in both the US and Canada.
It belongs to the T10 miniature wedge family, a form factor defined by its wedge-shaped base, which allows the bulb to seat directly into a socket without a separate metal cap or bayonet pin.
The 194 operates at 12 volts and draws 3.78 watts, placing it in the low-wattage range typical of instrument panel and indicator lighting.
The Ford Ranger (2000-2003) uses the 194 bulb for this application, as does the 1991-1993 model range.
Because the 194 is an ANSI-standardized type, it is produced by multiple manufacturers and is widely available as a direct-fit replacement for this application.
The T10 wedge base format is shared by several bulb variants with differing wattages, so substituting a bulb of the same base type but a different wattage rating would not be a like-for-like replacement for this application.