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What would cause brake lights to come on when you turn on headlights on a 1990 firebird but work normal when headlights are off?
Ronbow
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.
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∙ 18y ago
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Why does the brake lights on a 1996 Pontiac Firebird work in reverse with the headlights ON and normal with the headlights OFF?
if i read that right lol all cars do that that is just the way they are set up if ur lights arent on your brake light dont need to be on hell as long as someone sees your reverse lights ur fine but anyways all cars do that
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.
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.)
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.
