The Yamaha ET400TR Enticer LTR headlight bulb uses a 9003 size for both high beam and low beam applications. The replacement chart covers 1989 to 1990 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 9003 bulb is the sole type specified across all listed headlight positions for the Yamaha ET400TR Enticer LTR, covering both the high beam and low beam functions for 1989-1990.
The 9003 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments: one rated at 60 watts for high beam output and one rated at 55 watts for low beam output.
Because the 9003 serves both the high beam and low beam headlight positions in this application, a single bulb type handles the full forward lighting function rather than requiring separate bulbs for each beam.
The 9003 operates on a 12-volt electrical system, which is standard for automotive and powersports applications of this type.
The 9003 uses a P43t base, which is a standardized bayonet-style mount with a 43mm collar. Fitment depends on this base type matching the socket in the headlight housing.
The 9003 is defined under the ANSI standard and is recognized in both the United States and Canada, indicating a regionally standardized specification rather than a proprietary one.
The 9003 and H4 bulbs share the same P43t base and dual-filament halogen construction, and are often considered interchangeable in practice, though the 9003 designation reflects the ANSI classification while H4 reflects the ECE classification used in other markets.