Why do I have brake lights but no tail lights?

The most common reason why your tail lights are not working but brake lights are is due to a bad or wrong type of light bulb installed. It can also be caused by a blown fuse, bad wirings, or corroded sockets or plugs. A faulty control light switch could also be to blame.

Do tail lights and brake lights use the same bulb?

On many vehicles, the tail lights and brake lights share the same bulb. One filament inside the bulb is for the tail light and the other filament is for the brake light. There are also some vehicles that have a separate bulb for each circuit.

Why do my trailer lights only work when I brake?

The first thing to check is the ground wire, the white wire coming off the connector. A bad ground is a common problem on a trailer and will cause the lights to do all sorts of odd things. Make sure that the ground wire has good connection to the metal trailer frame. Even paint can sometimes prevent a good connection.

How do you know if your brake switch is bad?

What Are The Symptoms Of A Faulty Brake Light Switch?

1. Your Brake Lights Don’t Light Up. Your brake lights are supposed to turn on when you push down on the brake pedal, giving a heads up to the driver behind you.
2. Brake Lights Stay On Continuously.
3. Bad Cruise Control.
4. Car Won’t Turn On.
5. ABS Warning Light Comes On.

Are tail lights different from brake lights?

In many vehicles, the brake lights and the tail lights are located on the same globe. Tail lights are engaged when the you turn on your headlights or when your parking brake is on, whereas the brake lights will light up immediately when you apply pressure to the brakes.

Are tail lights always on?

Tail lights are like daytime running lights: they are always on. Not true. They turn on with the headlights. A lit up dashboard means all lights are on.

Why won’t my tail lights work on my trailer?

Expert Reply: It could be a tow package fuse on the vehicle. Use the owners manual to find the locations of fuses/relays related to the tow package wiring to check them and replace as needed. If the issue is not a fuse or relay then you can test the vehicle side trailer connector using a circuit tester such as # 40376.

Why does my trailer tail lights not work?

Poor plug contact may cause trailer tail lights not working. Corrosion, debris, and oxidation can all prevent clean contact between the plug and socket connection. For best results, use a small needle file set to clean all the the connection points inside the trailer plug.