The Mercedes-Benz G500 uses the 3893 bulb for both front and rear side markers across the 2002-2008 model years.
The 3893 is an ANSI-standardized bulb type, meaning its physical and electrical specifications conform to a defined industry standard recognized in the United States and Canada.
The 3893 bulb operates on a 12-volt electrical system, consistent with standard automotive low-voltage architecture.
The 3893 is a dual-filament bulb, meaning it contains two separate filaments within a single envelope, allowing it to serve more than one lighting function from a single housing position.
The BAY15d bayonet base on the 3893 is a two-pin offset bayonet mount, where the two pins are positioned at different heights to ensure the bulb can only be inserted in one orientation, preventing incorrect filament alignment.
The BAY15d base type is classified as a specialty application fitting, distinguishing it from more common single-pin bayonet bases such as the BA15s found in general-purpose automotive bulbs.
Because the same bulb size applies to both the front and rear side marker positions on the G500, a single 3893 bulb type covers all side marker replacements across the vehicle.
The uniformity of the 3893 specification across all listed model years indicates no mid-generation change in side marker bulb fitment for the G500 during the 2002-2008 period.