GMC Safari License Plate Bulb Size

The GMC Safari license plate light requires a 194 bulb size for proper installation and function within the rear exterior lighting assembly. Available data covers the production range from 1985 through 2005 for the specified vehicle and component.

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
1985-2005	194

Bulb Specifications

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

Other Locations

Additional Notes

The GMC Safari uses the 194 bulb for the license plate position across all listed model years, spanning 1985-2005.
The 194 is classified as a miniature wedge bulb, designated T10 in the international bulb sizing system, where "T" refers to the tubular shape and "10" indicates the width in eighths of an inch.
The 194 bulb operates at 12 volts, which is consistent with standard automotive electrical systems.
At 3.78 watts, the 194 bulb draws a relatively low amount of power, a characteristic typical of license plate and courtesy lighting applications.
The 194 carries ANSI standardization, meaning its physical and electrical specifications are governed by a recognized industry standard applicable in both the United States and Canada.
The T10 wedge base design does not use a metal contact pin; instead, the glass envelope itself serves as the contact point, which distinguishes it from bayonet or screw-base bulb types.
Because the 194 is an ANSI-standardized type, other bulbs sharing the same T10 wedge base and 12V rating may be physically interchangeable, though wattage differences can affect socket compatibility and circuit load.
The uninterrupted use of the 194 across the GMC Safari's 1985-2005 production span indicates no change in the license plate socket specification during that period.