Why are my brake lights working but not my tail lights?

Why are my brake lights working but not my tail lights?

One of the main reasons why you might see your brake lights working while your tail lights don’t is because the bulbs installed in the tail light were faulty. You should run some tests to make sure if the bulbs are the main culprit or not and to do that, you will need to remove the tail light cover.

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.

Why would tail lights not work on trailer?

It is possible that one of the bulbs on your trailer burned out. So check the lights. If the bulbs are not the problem, disconnect the trailer’s wiring system from the tow vehicle. Test all of the lights, from the backup lights to the turn signals and brake lights to ensure the problem is not the tow vehicle itself.

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.

What can cause my tail lights not to work?

Burned Out Bulbs: In the case where only one of your rear lights appears to be out, the cause is most likely a burned out bulb. When the filament breaks inside a bulb, it cannot illuminate the gas inside the bulb. A vehicle with a bad relay or bad ground may not be able to successfully power your rear lights.

Are brake light bulbs red or white?

The only lights that have to be red are the brake lights. Other lights, particularly the turn signal lights, can be amber. The back-up lights must be white, and there can never be any blue lights on the car, except for custom ground lights.

Is it illegal to drive with a brake light out?

No brake lights penalty If you have a single brake light out for example and the police officer is of reasonable mind, they may simply pull you over and give you a verbal warning to get it fixed as soon as possible.

Why are my trailer lights not working?

Because the most common reason for trailer lights not working properly is a bad or missing ground, check the trailer’s and truck’s ground connection first. A poor ground often becomes the culprit when only some lighting functions are working and when lights go out when you push the brake pedal.

What is causing my brake lights to not work?

Burnt Out Bulb. By far,a burnt out bulb is one of the brake light problems that crops up the most,and it’s easy to understand why.

  • Bad Brake Light Switch. When the brake pedal gets pushed,a switch is triggered to send a signal to the lights out back that it’s time to turn on.
  • Blown Fuse.
  • Bad Socket.
  • Does trailer need to have brake lights?

    Small” trailers are required to have a taillight and license plate lights, at least when it is dark enough to require headlights, he said. A trailer is required to have a brake light, but only if the trailer or its load blocks the view of the towing vehicle’s brake light, he said.

    Why do your brake lights work but not your tail lights?

    The possible reasons for brake lights not working but tail lights are: Blown out light bulbs are the most common reason for why the brake lights not working but the tail lights are. Remove the screws from the bulb lens (which you can access through the trunk or see your vehicle repair manual to get the exact location).