Light bulb 1077 12V 21/5W BAY15D

1077 12V 21/5W BAY15D Bulb for Trailer Stop and Tail Lights

The 1077 bulb is essential for trailer lighting systems, providing dual-function illumination as a combined stop and tail light. This bulb ensures your trailer is visible to other road users during braking and normal driving conditions, making it a critical safety component for any trailer setup.

Spare lamp for trailer lights

The 1077 features a BAY15D double filament socket with P21/5W specifications, delivering 5W for tail light and 21W for stop light operation. The offset-pin design ensures precise positioning and secure fitment in standard trailer light housings. This bulb is designed for 12V systems and is a direct replacement for original equipment on most European trailers.