The Hummer H3T side marker requires a 194 bulb size for proper installation and function within the lighting assembly. Data for the specified component covers the range from 2009 to 2010.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 194 bulb is the sole front side marker bulb size listed for the Hummer H3T across the 2009-2010 model years.
The 194 bulb conforms to the ANSI standard applicable in the US and Canada, placing it within a regulated specification framework for miniature automotive lighting.
It is a T10 miniature wedge type, meaning it uses a wedge-style base rather than a bayonet or screw fitting, and is inserted directly into a compatible socket without a separate metal base.
The 194 operates at 12 volts and draws 3.78 watts, classifying it as a low-wattage bulb suited to parking and marker light functions rather than primary illumination.
The 194 bulb size applies to both the standard front side marker position and the export variant designated as without headlamps, indicating the same bulb fits across these two distinct configurations for the 2009-2010 H3T.
The export configuration noted in the specifications represents a separate fitment category from the standard domestic setup, though both share the same 194 bulb size for the front side marker position.