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Why does your brake light not work when the headlights are on?
Wiki User
∙ 13y ago
Shouldn't have anything to do with it. The brake lights are on a completely different circuit than the headlights. If your brake lights are not working check the switch on the brake pedal. Before you do that check the fuse first. If the fuse is all right it is probably the brake light switch which is bad.
Check the bulbs to see if they are burned out. If you can't tell, replace them anyway. If the Brake switch is good and the fuse is good, you may have a loose wire, or a bad wire.
Wiki User
∙ 13y ago
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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.
My headlights work but I have no taillights or brakelights?
WHAT ARE YOU DUMB REPALCE YOUR LIGHT BULBS STUPID! Not stupid replaced circuit boards checked fuses ran test light . When headlights are on no brake light or taillights and have all new bulbs stupid. Turn headlights off brake lights work, so figure that out smart man
Why on a 98 Chevy express do the brake lights go out when headlights are and brake pressed but window brake light works if headlights are off they work?
Check the bulbs one of the 2 filaments may be burned out
Why on your 93 s10 blazer do your brake lights not work with the headlights on and with them off if you push the brake the brake lights work but the front left parking light comes on as well?
The head light switch is shorting out ,or a bad connection
Why are my brake lights out but my headlights and blinker work?
Nonfunctional Brake LightsOne possible cause of this issue is that the brake light switch is not adjusted properly, or the switch could be defective.
Please 1999 jeep grand Cherokee why does your right brake light turn off when headlights are on?
This will happen if the ground terminal for the brakelight bulb is connected to the power side by accident. If you have a 3 wire socket or light assembly with GROUND, TAIL, and BRAKE wires two of them are wired incorrectly. When the headlights are off the brake light is finding ground thru the filaments of the headlights. Since the headlights have much heavier filaments, they provide a good ground for weaker brake light. When power is on the headlights the brake light will have power on both sides, so no current flows and it goes out.
Where are all the brake light grounds on 1990 sundance when the headlights are off then brake lights are fine but when u turn headlights on then the brake lights don't work except the cyclops lights.?
You probably have a loose wire connection in the brake light sockets. Insert a nail or probe tip into the back of the light socket where the wires are inserted and test the brake lights. (The socket can appear perfectly normal and the wires may even seem well attached.)
95 Prizm Lsi - headlights work but not tail lights or dash light Brake lights do work?
Replace the fuses if they go out its a short. Good luck finding that
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 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 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 wrong when your Brake lights on a 95 s-10 wont work when pedal pushed down and come on with headlights but the brake light still doesn't work?
theres a pressure switch just above brake pedal under the dash probably bad
