Signal and Brake Light Bulb for Agricultural Equipment and Trailers SKU: QT4499

When signal or brake lights fail on your tractor or trailer, you're not just losing visibility—you're creating a safety hazard and potential liability issue on the road. This 12-volt, 21-watt double-contact bulb restores reliable illumination to keep your equipment road-legal and operators safe during transport and field operations.

Why This Bulb Works

• Double-contact design provides secure electrical connection even under constant vibration
• 21-watt output delivers bright, visible light for brake and signal applications
• Standard 12-volt compatibility works with all modern farm equipment electrical systems
• Durable filament construction withstands the shock and temperature swings of agricultural use

Whether you're running grain to the elevator after dark or moving equipment between fields, reliable lighting keeps you visible to other traffic and helps prevent costly accidents. Keep spares on hand—bulbs always seem to burn out when you need them most.