Geo Tracker License Plate Bulb Size

The Geo Tracker license plate light uses 168 and 194 bulb sizes for illumination. Data for the lighting components spans from 1989 through 1997 for the specified vehicle.

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
1997	168
1996	194
1995	168
1992-1994	194
1989-1991	168

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

Other Locations

Additional Notes

The Geo Tracker license plate bulb specifications reference two ANSI-standard miniature wedge bulbs across its model years: the 168 and the 194. Both are T10 wedge-base bulbs rated at 12 volts, making them identical in base type and operating voltage.
The primary technical distinction between the two bulbs is wattage. The 168 draws 4.9 watts, while the 194 draws 3.78 watts. Despite sharing the same T10 wedge base, this wattage difference means the two bulbs are not direct electrical equivalents.
The Geo Tracker (1989-1990) uses the 168 bulb for the license plate position. The same 168 specification applies to the 1991 model year as well.
The 194 bulb is specified for the 1992-1994 model years, as well as for 1996.
The 168 bulb returns as the specified fitment for both 1995 and 1997, indicating that the two bulb types alternate across certain production years rather than following a single continuous specification.
Because the 168 and 194 share the T10 wedge base, physical installation of either bulb into the socket is possible. However, substituting one for the other introduces a wattage mismatch relative to the original specification for a given model year.