Check that your brake light switch is working. It is located on the upper part of the brake pedal under the dash. It should have current going in and when depressed the current should go thru the switch. if it is working check to make sure current is getting to the bulb. If not you have to find where the current stops and repair the wire.
SOURCE: 1991 volvo tail lights
Could you take out a bulb and with a testlight/probe check that you do in fact have power to that circuit .Also check that they are the correct bulb for that application I have seen people put indicator bulbs in where therse supposed to be a double filament bulb.Does the base of the bulbs lead contacts line up with the two steel terminals inside the plug?
SOURCE: MY BRAKE LIGHTS DONT WORK,
you have a broken wire some were if you cant find it you can run a seperate power wire from the third brake light to the brake lights but i would check for power at the brake lights first to make sure its not a ground problem
SOURCE: brake lights won't work. tail lights do. I
need to know if your third brake light up high is working or not.if it isn't,you need to check the brake light switch on the brake pedal with a test light,one side hot all the time,the other side should turn hot when brake pedal is pushed.
SOURCE: rear tail lights not working
If both tail lights are not working it is likely to be a fuse or bad connection under the hood or a connector at the back see if you can trace the wires to a connector and see if it is dirlty or corroded.
Turn signal tail lights and BRAKE LIGHTS NOT WORKING
It
can be faulty brake light switch causing the problem or its blown brake light bulb.
First check and confirm brake light lamp is working and that's not
the case.
For turn signal not working it can be faulty turn signal switch or its issue with wiring:----
==========
To
trouble shoot brake and turn signal related problem, check the help links mentioned
below:-----
Click
the link:----
1996 Buick Regal Grand Sport Brake light
Switch Location?
http://schematicsdiagram.blogspot.in/2012/04/1996-buick-regal-gran-sport-brake-light.html
-----------
No brake lights on Buick?
http://schematicsdiagram.blogspot.in/2012/04/no-brake-lights-on-buick.html
----------
Brake lights not working on 1989 BUICK REGAL?
http://schematicsdiagram.blogspot.in/2012/04/brake-lights-not-working-on-1989-buick.html
-------
How to replace Brake light switch on Chevrolet Tahoe?
http://technoanswers.blogspot.in/2012/02/how-to-replace-brake-light-switch-on.html
---------------
How to
replace Parking, turn, and Brake Lights on car?
http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-parking-turn-and-brake.html
----------
Upper brake lights work,
but low brake light not working?
http://schematicsdiagram.blogspot.com/2011/12/upper-brake-lights-workbut-low.html
------------
1997 Cadillac Catera: How
to replace Brake Light Switch?
http://howtobyme.blogspot.in/2012/06/1997-cadillac-catera-how-to-replace.html
------------
2003 Chevrolet S10 Tail light Fuse
http://schematicsdiagram.blogspot.com/2012/11/2003-chevrolet-s10-tail-light-fuse.html
---------
Chevrolet Parking light and Tail lamp light
Wiring diagram
http://schematicsdiagram.blogspot.com/2012/11/chevrolet-parking-light-and-tail-lamp.html
----------
Car Tail Lights Not Working?
http://schematicsdiagram.blogspot.com/2011/12/car-tail-lights-not-working.html
----------
Turn Signal Not working
http://technoanswers.blogspot.com/2012/11/turn-signal-not-working.html
----------
Right turn signal not working on Pontiac Car?
http://schematicsdiagram.blogspot.com/2011/12/right-turn-signal-not-working-on.html
--------
Only one side indicator light working on car?
http://schematicsdiagram.blogspot.com/2011/12/only-one-side-indicator-light-working.html
-----------
Turn signals not working on 1987 Jeep
Wagoneer?
http://schematicsdiagram.blogspot.com/2011/12/turn-signals-not-working-on-1987-jeep.html
1996 Chrysler LHS brake light circuit wiring
diagram?
http://technoanswers.blogspot.in/2012/02/1996-chrysler-lhs-brake-light-circuit.html
----------
How to replace rear Brake
lights on 2004 Toyota RAV4?
http://schematicsdiagram.blogspot.in/2012/02/how-to-replace-rear-brake-lights-on.html
------------
One brake light on driver
side not working, but other lights work?
http://schematicsdiagram.blogspot.com/2011/12/one-brake-light-on-driver-side-not.html
----------
2002 Lincoln Town car Fuse Box
http://schematicsdiagram.blogspot.com/2012/11/2002-lincoln-town-car-fuse-box.html
2007 KIA Rio: Brake Light Fuse Box
Diagram?
http://repairhelpcenter.blogspot.in/2012/06/2007-kia-rio-brake-light-fuse-box.html
-------------
Overhead Brake lights not working on 1999 GMC
Sierra 4x4?
http://technoanswers.blogspot.in/2012/03/overhead-brake-lights-not-working-on.html
---------
2004 Ford Mustang: Brake
light Fuse Location?
http://howtobyme.blogspot.in/2012/05/2004-ford-mustang-brake-light-fuse.html
---------
These
will help.
Thanks.
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