check brake light switch
tail light bulbs has two filaments inside. One for regular lights and a second for brake lights. One filament is burnt out. Change the bulb.
make sure u got a twin lement bulb one element is for tail light other is for brake light sounds like u just put wrong bulb in
The way i understand it is that the relay has the hot and the ground connected and when you press the brake the relay works like a toggle and completes the circuit.
The bulbs and or sockets are dirty/corroded and need either cleaned or replaced. The corrosion causes the light to not have a good ground contact, therefore the circuit's power is finding it's way through other systems.
Something you may not realise is that the brake light bulb is often one bulb with two elements. One of the elements will be for the brake and the other will be for the tail lighting for example so,when tested, the actual bulb will still light up because the second element is unaffected. Make sure that the 'blown' bulb that you are actually changing is not in fact your fog lamp. This will not automatically light up when you test your lights as you have to operate this light separately (similarly to indicator lights). So the fog lamp bulb will appear to be the only one not lit up when you test your lights. Find the bulb with two elements inside and change that one. Sounds obvious (and may be obvious to many) but it's a common mistake. Hope this helps!.
it does that on mine becsue the brake doesnt work if ur break works its probally a short or something
u have a short in ur wireing.
There's a switch on the brake pedal that when you step on it, it completes the circuit for lighting up the brake light.
Check bulbs?
The left brake light works the right brake light doesn't and the bulbs is good
Problem may be in the steering column turn signal not cancelling completely - try "jiggling" stalk and have assistant watch brake light
try changing the build i think it has a double fillement build that works with the brake light and blincker
Replace the bulb it works when you turn on the driving lights and when you brake. there are two little springs inside the light one is for the brake light and the other is for the driving light. All you need to do is replace the bulb. good luck.
its gotta be a ford a problem with the center brake light circuit causes the lights to go out i believe it is a diode
The ground for the brake lamp. When the tail lights are off, the tail light circuit can act as a ground for the brake light. When the tail lights are on, it can't.
You need to check the wiring for power to the bulbs.
why my jeep brake light on all time