The Hino GC17 front side marker uses a 194 bulb size while the rear side marker requires a 67 bulb size. The replacement chart covers 1990 to 1991 production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Hino GC17 uses two distinct bulb types across its side marker positions: the 194 for the front and the 67 for the rear, across the 1990-1991 model years.
The 194 is an ANSI-standardized miniature wedge bulb in the T10 form factor, rated at 12V and 3.78W. Its wedge base design means it requires no separate socket locking mechanism, as the bulb body itself acts as the retention element.
The 67 is an ANSI-standardized single-filament bulb with a BA15s bayonet base, rated at 12V and 8W. The BA15s designation indicates a single-contact bayonet fitting with a 15mm base collar.
The 67 bulb is a lower-wattage variant of the 1156. While the two share the same BA15s bayonet base, the difference in wattage means they are not directly interchangeable without accounting for the effect on circuit load and light output.
Both the 194 and 67 are recognized under ANSI standards applicable in the United States and Canada, indicating conformance to a defined set of electrical and physical tolerances for those markets.
The front and rear side marker positions on the Hino GC17 draw notably different wattages, with the rear position consuming more than twice the power of the front, reflecting the differing visibility requirements typically associated with each location.