if you have checked all your fuses and they are ok this has happened to me already.... more than likely your brake pedal switch has gone bad. sometimes your cruise control brake override goes out with this but more than likely not. replacing this is somewhat aggrivating if you have large hands. you have to unhook the connectors while it is still connected to the brake pedal brace and then pull it out of the pedal brace bar. then you have to put the new one in its place and reconnect it after you make sure it is being contacted by the brake pedal when it is not depressed.
It is probably the brake lights that are on due to a misinstalled or damaged brake light switch.
Tail lights. Brake lights. Backup lights. Signal lights. License plate lights.
either dimmer switch or blown fuse If you are saying that the tail brake lights are working but the third brake light is not....It may be a defective turn signal switch in the steering column.
You probably have a bad turn signal switch (inside the steering column) if this is a GM.
Check Flasher and/or switch
Try checking the tail light relay.
There could be a severed connection somewhere along the line, or it could just be a blown fuse
Look for a fuse labeled TAIL LIGHTS. There are 2 separate circuits, one for brake turn and flasher and the other is for tail lights.
See sources and related links below for 1993 Dodge Shadow tail light, brake light and turn signal light bulb part numbers.
I found it easier to use the wires to the tail lights on the tractor.
Headlights? Brake lights? Tail lights? Signal lights? Courtesy lights? Dash lights? Check engine lights? Need more info please.
It could be a blown fuse. Tail lights and brake/turn are on separate fuses. Apparently there is not a ground problem since brake/turn works OK.
No it is not illegal, as long as you have operational tail lights, brake lights, signal lights and a plate light.
On a toyota tacoma 2003 SR5 when the tail lights are turned on the brake lights come on and when the tail lights are of the brake lights work just fine what could be the problem. If the truck has a trailer plug, inspect the plug and plug wiring for damage and corrosion.
Check the switch on the brake pedal
Are you saying your tail lights themselves do not work and only the brake lights work. If that is the case, check the fuse, and then check the tail light bulbs.
Check your fuses.
its on different bulbs
Try your fuses
on some cars the tail lights and brake lights are totally different bulbs gain access to the bulbs and have someone push the brakes so that you can determine which bulbs are the brake lights and replace the tail lights
Check the brake switch at the pedal.
No this isn't the reason why your tail lights don't work. Tail-lights and the turn signal are two different systems in the car: if your turn signal is broken that doesn't necessarily mean that your tail-light will be broken.
Be sure to keep the rear tail lights, brake lights and signal lights in good working order. To many times you see vehicles with lights missing.
The turn signal switch is bad. Happened to me on a 99 Lumina. Got to pull steering wheel,etc. to replace switch. The brake light circuit goes through turn signal switch. The third (high mounted brake lite) brake lite uses switch on brake pedal