Is the tail light the same bulb as the brake light?

Tail lights and brake lights on many vehicles use the same bulb. The tail light is powered by one filament, while the brake light is powered by the other. Some vehicles have separate bulbs for each circuit, but this is not the norm.

Why does my tail light not work but my brake light does?

What’s the difference between tail lights and brake lights?

When you apply the brakes to slow down, the brake lights on your rear view mirror let other drivers know. During the night or in adverse weather conditions, tail lights illuminate so that drivers behind you will be able to see you clearly.

Why does tail light work but not brake?

How come? A bad light bulb is the most common cause of brake lights that don’t work but tail lights do. Faulty brake light switch or blown fuse can also cause the problem. It’s safe to drive with your vehicle’s taillights on but the brake lights off.