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Check the bulbs they are double filamented with smaller being for brake lights

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Q: Why do the brake lights not work on my 2002 Isuzu rodeo when my headlights are on but work when they're not on?
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Related questions

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.


Why do your brake lights come on when your headlights are on?

they are not brake lights they are fog lights and they turn on because it is for the car behind to see you


Why does your parking lights and brake lights work and not your headlights and you replaced the switch and still no headlights?

Check the fuse for the headlights. It is probably open.


What is the problem if I have headlights and brake lights but no running lights?

Fuse for parking lights probably blown.


What causes the brake lights to work when the headlights are off but when you turn the headlights and running lights on the brake lights go off on a 1992 Plymouth Sundance?

Often this type of behavior is caused by a bad ground for the lighting circuit. Check the ground circuit for the brake lights.


What should I do when my 2000 Cirrus brake lights work when the headlights are off?

ummm... your brake lights should ALWAYS work whether your headlights are on or not, that's how people behind you know you are stopping.


Why do brakelights go off on when the head lights are switched on?

Brake lights should NOT be effected by the headlights. Brake light function is completely independent of the headlights. Assuming you are not refering to the tail lights, or marker lights, which are supposed to come when the head lights are turned on. Not having brake lights when the head lights are on is a big safety problem and should be corrected.


Why do brake lights stay on when you turn headlights on on your Astra?

the brake lights are on a separate cuircut,if your brake lights are staying then it will be a fault with the brake light switch. the switch is located under dash,and will be on or very close to brake pedal.


What make the biggest difference in how safely you can drive at night headlights or brake lights?

head lights


What is the cause for tail lights.parking lights and dash lights not to work when you have headlights and brake lights?

Most likely a fuse.


Brake lights don't work when the brake is pushed. Work with headlights on only.?

The brake lights and the tail lights are separate circuits. Check the brake light fuse, then check the brake light bulbs, then check the brake light switch.


Why won't the tail lights go off when I park and turn off the headlights?

Is it the taillights or the brake lights? If taillights it may be a wiring problem, If brake lights check the switch on the brake pedal