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What would cause your brake lights to not come on with the headlights on If the headlights are off the brake lights are fine?
Possible ground issue at the taillights.
What would cause you to have tail lights but no brake lights?
Check the switch on the brake pedal
Why would the brake lights on a 1998 318ti work normally without the headlights but stay on constantly with the headlights?
if you recenly replaced bulbs u may have installed them backwards they should be running lights and brake lights if this is the case they maybe installed incorrectly
What would cause no brake lights in rear when the running lights are on the vechile is Nissan sentra?
brake light switch would be most common cause
What would cause brake lights and running lights not to work you have power to the brake switch?
fuse, bulbs
When the headlights are on there are no brakelights when headlights are off brakelights work what would cause this?
Bad ground on the brake lite circuit.
Why would the headlights of a 1988 Honda LXI be weak on dim and the bright lights only work on the right side?
A bad ground wire will cause dim headlights, or will cause lights not to work.
Why would a 2002 Chevy Express brake lights work when the headlights are off but when you the headlights are turned on the brake lights are on and go off when you press the pedal?
i found it to be the tail light harnesses go bad . a common problem with them because the bulb sockets short out.
Why would the brake lights and dash go out when the headlights are turned on a 1989 Honda Prelude?
It may be wired wrong.
What would cause the brake lights not to work on an 84 corvette when all of the running lights work?
BAD BRAKE LIGHT SWITCH AT TOP OF BRAKE PEDAL
Why would a ford mustangs rear running lights and brake lights work but not the headlights and interior lights?
It sounds like a blown fuse or a bad head light switch
Why would my 97 mercury villager brake lights not work but dash and tail light come on when braking?
I would check the rear bulbs. I just had this issue and it ended up my brother had used the wrong bulb, and odd enough it caused the brake lights to stay on with headlights. When headlights were not on and you applied the brakes the dash would light and brake lights worked. Strange, HUH? I must admit before this revelation, I replaced headlight switch and brake switch, with no avail.
What would cause the headlights tail lights interior lights to stop working on a 86 caprice?
probably the fuse is blown.
What causes the brake lights to fail when all other lights are working fine?
The BOO (Brake On/Off) Switch may need to be replaced. If it is bad, it would cause the brake lights to NOT illuminate when the brake pedal is applied.
Why do the taillights on a 2003 vw passat not work when bulbs fuses and headlights are good?
If you are referring to the brake lights it is probably a bad brake light switch. Your vehicle may also have daytime running lights which would be on without the parking lights.
Brake lights in rear stay on when headlights are turned on Why?
If you have recently replaced the taillight/brakelight bulbs... you may have installed the wrong type. This will cause the circuit to cross and light up both filaments, which would look like a brake light.
What would cause brake lights not to go on?
More than likely it is the brake light switch that is attached to the brake pedal.
What would cause the headlights radio and dome lights to quit when headlights are turned on in a 1996 crown vic?
I would replace the headlight switch as Ford has had their share of these problems.
What would cause brake lights not to work but all other tail lights are working on a Ford F-350?
Check your brake light switch at hte brake pedal.
Why would my headlights quit working but the parking lights brake lights and tail lights still work and high beams do when switch is pulled back on a 94 Grand Am?
Low beams are burned out.
What would cause the brake pedal to be hard and still no brake lights on a 2006 Lincoln navigator?
brake switch located on the top of the brake pedal
How do you fix brake lights on a 92 Toyota 4runner that don't work when headlight are on but are on when the headlights are off?
that sounds like i ground in the bake by the lights or if it has a trailer plug i would start their
What would make your brake lights not work?
The most likely cause is a bad brake light switch (if none of the brake lights illuminate) but if its only one of the brake lights, try changing the bulb. Even if they still work as running or turn lights because they have a double filament and may still work partially, but not as brake lights.
What would cause brake lights to come on when you turn on headlights on a 1990 firebird but work normal when headlights are off?
I might start by checking the ground wire of the taillight assembly. Make sure there isn't any rust that is preventing a good electrical connection to the chassis ground.
Why would a 2002 Chevy Cavalier's brake lights and turn signals go out in the back without the reverse lights headlights running lights or brake bar going when it's not a fuse or a bulb?
Bad socket? Bad ground? Problem in steering column switch?
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