What would cause the brake lights to stay on when the headlights are on?

What would cause your brake lights to not come on with the headlights on If the headlights are off the brake lights are fine?

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

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.

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.

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

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 the headlights tail lights interior lights to stop working on a 86 caprice?

probably the fuse is blown.

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 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.

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.

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 go on?

More than likely it is the brake light switch that is attached to the 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 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.

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 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.

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

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?

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.

Why would running lights and lower brake lights and parking lights on Subaru Impreza Outback not work when headlights and hazards and turn lights and upper brake lights do?

I have run into the same thing with this kind of car. On the steering column at the top they have a switch that will turn the running lights on or turn them off. check the switch you may have hit it and turn it on.

What would cause brake lights to work normally without headlights but stay on constantly when headlights are on?

they don't Dual element bulbs You may be referring to a dual-element bulb ie. bulb #1157. When the headlights are turned on, the taillight element comes on with the brakelight element working regardless of the lights being on or off. Of course this applies only to certain make and models. Some have separate bulbs, but I don't think this is what you were referring to...

Why would your 1999 Geo Tracker head lights and dash lights blink?

On a 1999 GEO Tracker, a bad fuse can cause the headlights and dash lights to blink. A bad voltage regulator or alternator can also cause lights to blink and flicker.

What would cause brake lights not to come on until the brake pedal is all the way compressed?

Check the switch adjustment on the brake pedal arm.

What would cause brake lights emergency lights etc to stop working?

Check the bulbs - they are doubloe filamented with the smaller being for brake/turn signals Check the fuses

Why would a car's running lights and dash lights come on when the brake pedal is pushed and the brake lights come on with the headlights?

have you replaced a brake light bulb? if you have a combined sidelight and brakelight you need a double contact bulb. if someone has fitted a single contact bulb, eg an indicator bulb, the terminal touches both the brake and sidelight terminals crossing them out, bringing sidelights on when brake and brakelights when s/lights switched on. hope this helps

What would cause the Brake lights on a 2000 s10 to not work at all Turn signals work Tail lights work Reverse lights work but none of the 3 brake lights work.?

You probably need to replace your brake light switch. It's near the top of the brake assembly, beyond a trim panel. The fact that all three brake lights don't work rules out problems in the multifunction switch (the cause of similar problems affecting only the two rear lights.)

Why would your headlights and dash lights go on when you press the brake pedal?

sometimes its because somebody put in a light bulb wrong & is back feeding the system.

What would cause brake and tail lights to remain on after the engine is turned off?

There's a switch that the brake pedal engages when pressed that makes the brake lights go on. this switch may be stuck.Or the peddle staying on switch

What causes the brake lights on when headlights are on in Toyota Previa 94?

you have bad contact in ground cable of the brake lights You might also like to check that there has not been a bulb replacement lately that uses a single contact in a double contact socket. This would have the effect of shorting the brake and tail light inputs and thus turn on ALL lights when brakes are applied or the parking lights turned on.

Why would your headlights and dash lights blink on 1999 Geo Tracker?

Blinking lights on dash and exterior lights may indicate a bad ground wire or a faulty headlight switch. Both would cause those problems.

What would cause the third brake light not to work but the other brake lights do in a 1994 s10 pickup?

a blown bulb or loose wire.

On a 1991 Chevrolet what would cause brake lights to remain on when car is switched off?

Check the brake switch located on your brake pedal shaft. May have to be replaced.

What would cause the headlights and the instrument panel lights not to work at the same time on a 1988 Chevy S10?

Faulty ground to the dash.

Why would your brake warning light come on and no other brake warning lights are on emergency brake is off on your 1999 Oldsmobile eighty eight?

It is possible that a wheel speed sensor is bad. This will cause the anti lock braking to not read the wheel correctly which would be a brake problem that would cause a light.

What would cause my Turn signals and brake lights do not work on a 2000 Chevy cavalier?

have you checked your fuses?

Would anyone know why your transmission isn't coming out of park and the brake lights wont come on but the parking lights on the back and headlights work on a 96 civic dx?

Look at your brake pedal where it connects under the dash. The problems you are having are both related to the brake pedal. There is a safety feature that won't allow you to shift your tranny until you have applied the brake, and since your brake lights are not coming on, there is either an electrical connection or a mechanical connection that is not working.

When the headlights are on there are no taillights what would cause this?

sometimes the head lights and tail lights may be fused separately,check your fuses.you could have a bad ground.thats just two places to start.

What would cause your headlights and dash lights to dim or shut down while driving my 2006 F150 Supercrew?

your alternator is going bad

Why on a 1987 Toyota Camry when the headlights are on the brake lights are always on but go off when you press on the brakes?

Any time you have an strange problem with lights it is a poor ground. Your tail lights are back feeding through the brake lights instead of going to ground. I would start by running a jumper wire to the tail light and brake light ground and I would guess the problem would be fixed. You might also want to look at your break light failure indicator. It commonly goes bad in these models.

Why would headlights go out when the rest of the lights are still working?

Not all the lights are on the same circuit. Check your fuses first to see if one is blown. The owner's manual will tell you what circuit the headlights are on and where the fuses are located. Usually it is under the dash, drivers side far right. You can probably read the circuit name on the fuse box if your eyes are betteer than mine. If the fuse is blown, replace it with one of…