Question about Mercury Cougar

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I am having a problem with my brake lights coming on. I can turn on the lights and the turm signals work. I have replaced the brake switch twice with new ones. I also replace the plug that plugs into the brake switch. I have checked the fuses and they are okay. What else can I check that might becausing this problem?

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If you have changed the brake lamp switch and it has made absolutely no difference on each occasion I would be checking the earthing connection to the rear lamp clusters.

Posted on Oct 04, 2008

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2 Answers

I have a 94 Chevy C1500 and the right side brake light and blinker are not working. The tail light and reverse light work though, and the right front blinker works but it blinks twice as fast as it...


It could be a bad multifunction (turn signal) switch. The way that switch works, it is possible that it can turn on the front blinker and not the rear one. It also cancels the brake circuit so the turn signal can work with the brake pedal depressed.

However, a more likely cause would be a break in the YELLOW/BROWN wire at the rear of the truck. It is common for the connector to get corroded at the left rear frame area where the bed harness connects to the vehicle harness. If you have trailer connections spliced into the wiring harness, these connections are also prime candidates for corrosion. I would look there first. Inspect these harnesses thoroughly all the way up and into the tail light assembly.

If the wires under the back of the truck look good, then I would check for power coming out of the turn signal switch. The wire at the turn signal switch is plain YELLOW (with no brown tracer). It is Pin (M) on the turn signal switch connector. The front signal is a LIGHT BLUE wire at the turn signal switch Pin (H). If you probe these with a test lamp, they should both work the same except the yellow wire will be hot with the brake pedal depressed and the switch NOT in the left turn position. If there is no power at the switch connector, replace the switch.

May 13, 2011 | 1994 Chevrolet K1500

1 Answer

1998 cavalier, back turn signals do not work, replaced bulbs, front turn signals work, brake light does not work. but brake light works inside the car on rear window.


OK try this turn the signal light on one side or the other then push brake pedal if brake lights come on replace the turn signal switch

May 10, 2011 | Chevrolet Cavalier Cars & Trucks

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I replace my brake switch & my light don't work? when i stop


IF THE FUSES INSIDE THE CAR & UNDER THE HOOD HAVE ALL BEEN CHECKED WITH A GOOD FUSE TESTER, & THE BRAKE LIGHT SWITCH REPLACED, THE TURN SIGNAL SWITCH IS NEXT. THE BRAKE LIGHTS GO THROUGH THE TURN SIGNAL SWITCH SO THEY CAN BE USED AS TURN OR BRAKE LIGHTS. I'M ASSUMING THE BULBS ARE OK. REMOVE THE PLASTIC FROM AROUND THE TURN SIG. SWITCH. STAY AWAY FROM ANY WIRES THAT ARE IN THE YELLOW SLEEVE. THEY ARE AIR BAG WIRES. WITH BRAKE PEDAL DEPRESSED, THERE SHOULD BE POWER IN THE WHITE WIRE. IF THERE IS NO POWER IN THE WHITE WIRE, YOU MAY HAVE TO PUT A BYPASS WIRE FROM THE WHITE WIRE COMING OUT OF THE BRAKE LIGHT SWITCH TO THE WHITE WIRE GOING INTO THE TURN SIGNAL SWITCH. IF THAT DOESN'T MAKE THE BRAKE LIGHTS WORK, THE TURN SIGNAL SWITCH MUST BE BAD.

Jan 26, 2011 | 1999 Chevrolet Malibu

2 Answers

Brake lights dont work


Check the brake light switch, it is down on the brake pedal lever, you can dis-connect the wire connector at the brake light switch and check for broken wires at the connector, and then jumper the connector with a paper clip, if the brake lights come on then replace your brake light switch.

There might be more than one switch attached to the brake light pedal lever, the brake light switch usually only has two wires going to it when there are two switches.

If there is no problem with the brake light switch then you can suspect the turn-signal switch to be at fault, as all of the running lights, turn-signals, brake lights, and hazard lights are all ran through the turn-signal switch. You can also try stepping on the brake pedal and wiggle around the turn-signal switch and see if the brake lights flicker or come on.

Apr 26, 2010 | 2000 Jeep Grand Cherokee

1 Answer

I have no signals and when brakes lights are on, lose brake light to either side turn signal is set on


Hi!!

If you activate the turn signal switch and you step on the brake pedal, the turn switch (on the steering column) deactivates the brake light to make the signal light more visible. The bulb for the stop and turn lights is the same.

Turn hazard lights ON. If they don't blink, replace turn/hazard flasher, If one or more lights don't come on, replace bulb.

Check fuse and circuit wiring for broken or loose connections. If all looks fine, check following:

If front turn lights work fine, check brake/turn bulbs.

If turn lights come on but don't blink, replace turn signal/hazard flasher.

If front and back turn lights don't come on, replace switch on column.

Let me know how it worked out, Good Luck

Mar 24, 2010 | 1991 Plymouth Acclaim

1 Answer

REAR BRAKE LIGHTS DO NOT COME ONLY TAP LIGHT IS


Check for power at the turn signal switch. White wire comes from brake switch switch into the turn signal switch. The brake light switch is working because the high mount brake light is working..right? Do the turn signals work ok? if so, then the wiring is OK. The brake signal wires that come out of the turn signal switch are dark green(right) and yellow (left).

Oct 27, 2009 | 2001 GMC Safari

2 Answers

96 monte carlo rear window brake light works but not brake lights. tail lights work, blinkers work, replaced brake switch and bulbs still not working


This is a common GM specific problem. Your turn signal switch contains an elaborate networking device that has to cancel brakelights while running a turn light. Often times the ground within the turn signal switch is lost causing your situation. After investigating such other possibilities as fuses and loose grounds it may become necessary to replace the turn signal switch. Thank you, Dana

Sep 21, 2009 | 1998 Chevrolet Monte Carlo

3 Answers

Dash lights and tail lights not working on my 1999 chevy malibu


Hi its rob here what make and model of car is it? it sounds like the light switch is faulty but that wouldnt stop the brake lights workin try two stop and tail light bulbs then if you have stop lights your switch is at fault

May 11, 2009 | 1999 Chevrolet Malibu

1 Answer

No front, or rear running lights, or dash lights


check tailight and instr light fuse with a test light rather than visably

Mar 26, 2009 | Chevrolet Suburban 1500 Cars & Trucks

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