Suzuki Motorcycle LT-A500F Vinson 500 4x4 Auto Tail Light Bulb Size

The Suzuki Motorcycle LT-A500F Vinson 500 4x4 Auto tail light requires a P21/5W bulb size for proper illumination. Available data for the specified component covers the range from 2002 to 2007.

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
2002-2007	P21/5W

Bulb Specifications

Description	Bulb Size
ECE standard (Europe & worldwide). Dual-filament signalling bulb with BAY15d bayonet base. 12V, 21W/5W.	P21/5W

Other Locations

Additional Notes

The P21/5W is the specified tail light bulb for the Suzuki Motorcycle LT-A500F Vinson 500 4x4 Auto across the 2002-2007 model years.
The P21/5W is a dual-filament bulb, with one filament rated at 21W for braking or turn signal functions and a second filament rated at 5W for running light functions.
The bulb operates on a 12V electrical system, which is standard for automotive and powersports lighting applications.
The P21/5W uses a BAY15d bayonet base, a two-pin offset base design. The offset pin placement is a deliberate fitment feature that prevents incorrect insertion, as reversing the filament orientation would assign the wrong wattage to each lighting function.
The P21/5W is governed by ECE regulations, a lighting standard recognized across Europe and numerous other markets worldwide.
The BAY15d base is distinct from the BAY15s base used in single-filament bulbs. These two base types are not interchangeable, as the dual-filament BAY15d requires two separate electrical contacts to operate each filament independently.