Question about 1997 Jeep Grand Cherokee

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Brake lights not working. Fuses okay, bulbs okay, replaced switch under dash.

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Swich panel could be messed up..

Posted on Oct 03, 2009

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I have a 91 ford f150 and the brake lights wont work and the rear right blinker is dim. Can you help me?


Check System Fuse - A fuse is used to protect the brake light circuit from amperage overload. If the fuse has failed it will not allow the electrical current to continue to the brake lights. To check the fuse, first locate the brake light system fuse in the fuse panel which is either under the dash or under the hood in the power distribution center. Connect the test light to a ground like an engine or dash bracket and turn the ignition key to the "on" position. Using the test light probe both sides of the fuse. If the test light illuminates on both sides the fuse is okay continue onto the next step. If one side of the fuse illuminates the fuse has failed and needs to be replaced. If the fuse fails as soon as it is replaced or when you apply the brake pedal the brake light electrical circuit is shorted to ground. Rarely a system short can occur, a car repair manual is needed to find the wiring schematic for the brake light circuit. Once the brake light wiring has been located inspect and repair as needed.

Check Brake Light Bulbs - All cars have three brake light bulbs that create the brake light illumination affect. If all of these brake light bulbs fail no brake light operation will occur. I know what you're thinking, you might say all three brake lights at once? But in reality one brake light went out at a time and you did not notice. People only tend to notice something when they almost run into the back of your car to help persuade them to inform you the brake lights aren't working. Remove any of the brake light bulbs to confirm the bulb is okay or burned. After the bulb has been removed inspect the filament and replace if failed. If the brake light bulbs are okay continue to the next step.

Checking the Brake Light Switch - A control switch is used to connect the brake light electrical circuit. This switch is located near the brake pedal lever. Basic switches have just two wires, power in and power out to the turn signal switch. Use a test light that is grounded and with the key in the "on" position test for power at one side (wire) of the switch, then press the brake pedal while testing the opposite side (wire). It should illuminate the test light, if electrical power is connected through the switch go to the next step. If no power is detected through the switch the brake light switch has failed and replacement is required. If your car is equipped with more than two wires integrated into the brake light switch a car repair manual is needed to locate the proper brake light circuit wiring.

Nov 05, 2011 | 1991 Ford F150

1 Answer

My break lights wont work. The bulbs are fine. I'm just wondering how to check if its a problem with the sockets?


most likely, if all the fuses are okay, it is the switch at the top of the brake pedal under the dash - you should get 12 volts to the switch, and 12 volts through the switch when you press the brake pedal and the switch is activated - hope that helps - have a nice day :O)

Mar 29, 2011 | 1998 Chevrolet Lumina

1 Answer

93 Jeep GC.left brake light has been out for yrs. fuses good, bulbs good, contacts clean. While I was doing the above checkout, the taillights went out, bulbs and fuses okay.Help!


see if you are getting power to your brake switch under dash .then test for power at light plug 's then test and if you are getting ground's see, in light plug's let us know what you find . Thank you.

Apr 10, 2010 | 1993 Jeep Grand Cherokee

2 Answers

Brake lights will not work replaced bulbs fuses under hood appear ok


Try replacing the brake light switch which is located just above your brake pedal under the dash.

It looks like this and is fairly easy to replace...

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Nov 21, 2009 | 1997 Honda Accord

2 Answers

Brake lights do not work


If your fuses and bulbs are all good, then look above your brake pedal and you will see your brake switch up along your brake pedal arm. It will either be between the brake arm and the firewall so when you brake it pushes the switch in. Or it will be between the dash and the brake arm so when you brake it pulls the switch out. Most likely this switch needs to be replaced

Nov 18, 2009 | 2006 Triumph Tr 7

1 Answer

Nissan almera brake lights not working,checked fuse okay,changed bulbs still not working i don`t whats wrong.


Check the brake light switch under the dash at the brake peddle and make sure its working if it does not close when you depress the brake peddle the lights will not work You may hve to remove the lower cover for the dash to get at the switch

Aug 15, 2009 | 2003 Nissan Altima

1 Answer

What do the relays and fuses look like under the hook of a 96 s 10 blazer. Someone said to check theses and how do you. My brake lights dont work and the 10A fuse under the dash is good and i replaced the...


Did you check or replace the brake light bulbs?
It is more common to have burnt bulbs than a bad brake light switch or blown fuse.
Do you have orange signal lights and red brake lights at the rear?
Then the signal light switch will not affect the brake lights.....but....
If they are all red and you use the same bulbs for brake and signal....the brake light wiring goes through the signal light switch and could be affected there.
First....check for power getting to the brake light switch......and leaving it with a test light.......then go to the rear....pull a light assembly and check for power getting to the bulbs.no power? follow the wiring back to the switch looking for a bad connection.
The fuses and relays under the hood are usually in a black plastic box labeled fuses and or relays.

Aug 12, 2009 | 1992 Chevrolet S-10

2 Answers

Brake lights do not work, all other lights work.


It is a common chevy problem for the circuit board that holds to bulb to fail, are your running lights and signals still working back there as well? If not then you need to replace the boards.

Dec 12, 2008 | 2007 Chevrolet Silverado Classic SS New...

2 Answers

Replacement of brake light switch


its up under the dash at the very top of your brake pedal remove lower section of drivers dash if you have to

Jun 17, 2008 | 1995 Nissan Altima

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