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No brake lights but bulbs are good and so is the switch on the brake pedal need a wire diagram

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Have you checked the Fuse box .Sometimes the fuse may have a different label in the fuse box because the sometimes operate more than one circuit item.

Posted on May 25, 2011


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98 lincoln navigator both brake lights r not working? What's the first step

Are the bulbs good ? Check the power feed to the brake light switch ,then with the brake pedal pressed check for power (voltage ) out of the brake light switch ! Do you have a test light or voltmeter ? Do you know what an where the brake light switch is ? If you look up under the dash on top of the brake pedal arm you will see a plastic thing with wires an connectors going to it , that's it . may have two or a combination switch ! Brake lights , ABS signal , cruise control etc....You need a wiring diagram to figure out which wires you want to test !
Symptom Chart Condition Possible Sources Action
  • The stoplamps are inoperative
  • CJB Fuse 13 (15A).
  • Circuitry.
  • BPP switch.
  • GO to Pinpoint Test K .

Sep 15, 2015 | Lincoln Cars & Trucks

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How to trouble shoot no brakelights?

Well first you go to the fuse box and find stop light see if it has blown if not go to the rear and remove the globe holder plug assy which has either double or single light bulb if double get test light and touch either wire and get someone to turn on the ign switch [on but not start] and also put foot on the brake pedal ,if the test light dont light test the other wire base ,if no light comes on then go to the stop light switch mostly on the brakeline connection box under the bonnet or it could have a brake switch in the cab above the brake pedal and that will have either a broken wire or switch unserviceable .

Jul 11, 2014 | 1986 Dodge D150

1 Answer

Dodge ram 1500 wiring diagram

Three places to look. 1) Brake lamp fuse, 2) Turn signal switch and 3) the brake pedal switch. Brake light power comes from the fuse up to the turn signal switch down to the brake lite switch on the brake pedal and then on to the light bulbs. Start by putting the 4 way flasher on. If the brake lites flash, then the bulbs are good. That eliminated the fuse too. so the problem is the other two.

Jan 24, 2014 | Cars & Trucks

2 Answers

I have a 1993 Ford Tempo. Brake lights don't work . . . just the window brake light. Fuse diagram says flasher and brake lights are on same fuse. The flashers work but not lower brakes. I replaced the...

Chances are the brake switch has failed. The switch is located at the brake pedal in the front or behind the pedal arm. You will have to be on your back looking in order to see it. There will be a two wire switch. When the brake pedal is depressed the contacts on the switch open (or close depending on how the switch is placed) that in turn illuminates the brake lights. Easy to check with a 12 volt test light. One of the wires at the connector will be the power wire, with the test light grounded, probe one of the wires - the power wire should light the test light up. If neither wire light the test light then you have an open on the power circuit. You will need a wiring diagram to find out which wire is the power wire and trace it back until you find the open. If the switch is getting power and the brake lights are not illuminating,, the switch is bad and will have to be replaced. A fairly inexpensive part and fairly easy to replace. If you have little or no mechanical experience you may need to get a technician to replace it. The replacement switch may come with instructions on how to replace it. Hope this helps.

Jul 23, 2010 | 1993 Ford Tempo

2 Answers

2004 kia optima,break lights stay on,taillights will not come on,bulbs are ok

It sounds as if your brake light switch is bad, or, your brake pedal return spring isn't pulling the pedal back towards the seat.

First, just pull up on the brake pedal, opposite direction of when you are applying them & see if the lights go off. If yes, you'll need a new return spring. If not, then usually the switch mounted up above the pedal is defective & needs to be replaced.

I believe once that is corrected, the lights should work properly if your parking lights are working, as they both use the same circuit. If not, you'll have to do some testing of those wires & backtrack to the light switch.

The Brake light switch also can have the cruise control switch & other controls associated with it but not always, depending on the specific Model & Year & other options so testing it could require a wiring diagram, I've included a link that will give you the wiring colors for the brake light switch itself. Testing the wiring is the only way to determine any other condition that would be causing that to happen.

Here's the link for the wiring:

It shows the brake switch wires as GREEN.
Good Luck.

Feb 08, 2010 | 2004 Kia Optima

1 Answer

Brake lights dont work have change fuse cheaked bulbs

This should be your Brake Light Switch: Less than 10.00 at Azone.

You'll need a test light to be sure, and the ability to position yourself to where you can look up under your dash. If you follow the brake pedal upwards (you may need to remove the panel in front of it) from the pad to the pivot point, you will see an electrical connector & switch with 2 or more wires that the brake pedal rest upon when not being pressed. This is your brake light switch and it works when the pedal is pressed, it allows voltage to go to the brake lights.

Since the fuse & bulbs are known to be good, this is your next stop. Use your testor to first see if you have voltage on either side of that switch. (generally these are green wires with a black stripe but I can't be positive about that without a specific diagram for your car so you'll have to verify it by sight) If you have voltage on one side with no pressure on the switch, then you should get voltage on the other side of the switch when you press the brake pedal. If you have no power to that switch, you'll have to troubleshoot the wiring from there backwards to the power supply to find the issue. Good luck

Jan 30, 2010 | 1994 Oldsmobile Cutlass Supreme

2 Answers

Need a wiring diagram for a chevy s10. brake

your power starts at the brake light fuse,check with a test light,then proceed to stop light switch on brake pedal under dash,one wire will be hot when when you check it with your test light, the other won't be until you press down the brake pedal then the power flows through to the second wire,if no power to second wire replace switch,if you have power remove tail light bulbs and check for power in side socket.

Nov 24, 2009 | 1997 Chevrolet S-10 Pickup

1 Answer

'97 nissan altima, brake lights not working, wire

Lets keep it simple if the wiring harness is in good condition lets not look at that... first check your fuse if the fuse is good... check for power... if you have power coming and going from the fuse then check your brake switch ( located under the dash) attached to brake pedal. Please make sure your light bulbs are both good also. If your brake light switch is good and you have tried everything else it is either going to be in your 4 way switch or wiring harness

Aug 23, 2009 | 1995 Nissan Altima

2 Answers

Brake Lights not working

The brake pedal switch on most cars or trucks is near the top of the brake pedal assembly where it pivots under the dash. As you move the pedal it releases the switch.

Jul 11, 2009 | 1996 Chevrolet Lumina Mini

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