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What does the turn signal have to do with the brake lights on a Denali?
Wiki User
∙ 16y ago
im not familair with that make of vehicle but. the brake lights anf the signals are supposed to be separte. they both plug into a harness near the back of the vehicle. if your brake lights are working with your signals, you might have something crossed. take it to an expert you trusst and let them check it out.
Wiki User
∙ 16y ago
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Why does a bad turn signal switch effect the brake lights?
Since most brake/turn use the same filament in the bulb(1157) then if the turn signal switch is bad or offset then it will effect the brake lights.
1997 Cadillac eldorado has no brake lights the brake light in the rear window works and all signal lights work just no rear brake lights?
the turn signal switch is probably bad
Brake lights work but when turn signal is on both brake lights go out?
Check and make sure you have the correct bulb. The turn signal/brake light is a dual element bulb and if you have a single element it does not work properly.
What is it when the brake lights on a 1994 Oldsmobile cutlass supreme don't work?
One of two things. Either the brake light switch behind the brake pedal. Or try wiggling or rotating your turn signal stalk in a circle motion. If the brake lights work when the turn signal stalk is wiggled then you need to replace the turn signal stalk.
Why are your brake lights and hazard lights not working on a 99 Chevy turn signals and top brake light is working fine?
turn signal switch needs replaced!
What causes the tail lights not to work on a 1995 Chevy Tahoe when the turn signal and brake lights do work?
either dimmer switch or blown fuse If you are saying that the tail brake lights are working but the third brake light is not....It may be a defective turn signal switch in the steering column.
Why do Turn signal works but not brake lights your jeep?
Check the fuses for your brakes.
Why does tilt steering affect turn signals and brake lights on 02 ford ranger?
The turn signal wiring goes up the steering column. Turn signal bulbs are also used as brake lights and the brake light signal goes through the turn signal switch. If there is a loose connection or worn wire in the steering column, the tilt would cause problems.
What do you do if your brake lights only work when you pull back on your high beems in a buick reagal and how can it be fixed andor what is making this happen?
I have the same problem- press on the brake, no brake lights. Press on the brake and pull back on turn signal/high beams lever, brake lights turn on! Jiggle the lever, brake lights turn on, but left turn signal does not work. I have replaced the switch that is down near the brake pedal and that is not the problem. I think you may need to replace the whole turn signal/high beams/cruise control switch....or at least that's what I'm going to try.
When my running lights are working on my trailer my turn signal lights and brake lights don't work but if running lights are off turn signal and brake lights work?
I would check the running lights for one with a short. I had the same sort of thing with my trailer and I spent way to much time troubleshooting the brake and signal wires. Turns out a running light bulb connector was grounding out on the trailer and messing it all up.
How do you repair brake light short headlights on no brake lights just the cyclops lights off brake lights and cyclops all bulbs new and correct no obvious wire damage or switch wear?
Your question was a little unclear, does the brakelight work when the headlights are off but not when they're on? If that's the case, it's a ground problem. Check the ground to the tail light/brake light assembly. If the brake lights don't work at all, check the turn signal switch. Brake lights are routed throug the turn signal so that you can use the same bulb for turn signal and brake light. BTW, if you have an air bag, don't attempt to replace or inspect the turn signal switch yourself. It can be very dangerous.
Where the brake light relay is on a 2000 mercury cougar or why the brake lights wont work the fuses and lights are good?
Check the brake light switch first. It is usually near the brake pedal under the dash. A bad turn signal switch can also cause this if the brake lights are also turn signal lights. If the brake lights are independent of the turn signals then disregard the switch problem. A good wiring diagram will help to diagnose the problem also. Check with dealership mechanics as they have access to diagrams.
