Question about 1992 Acura Vigor

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What are grounds

Brake lights want work

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Most car mfg use the car chassis as a "ground" (saves wire) a simple voltage tester from about any autoparrts store cost's less than ten bucks , grounding the black wire from tester on any clean non painted metal surface on car can be used to follow the wires to the taillights so any breaks in wire can be found, also perfect for testing fuses and also light bulbs just by sticking pointed end of tester into lamp socket having someone hold break pedal down works well

Posted on May 14, 2014


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Posted on Jan 02, 2017


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Trailer brakes not working on a 1999 Ford F-250

If the trailer brakes don't come on when you depress the brake pedal, the larger red wire to the back has lost connection. Red to brakes, brown to running lights, green to right turn and brake light, yellow to left turn and brake light. White is always the ground and BE REAL SURE the ground connections are REAL clean and REAL tight at ALL points because with out ground, nothing will work. Including the brakes.

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2004 trailblazer left and right brake lights are not working but the third brake light in the middle is. What could be the problem?

Could be a bad ground in the brake wiring. If you make a ground from the socket to the frame or body, see if the lights work.

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1993 chevy silverado parking lamps go of when i turn on headlights, signal lights flicker when i press on brake.

Yes I would look for a ground circuit problem. I would look at the ground wires for the headlights first. Even run a new ground wire for the tail lights to see if it helps.
Could be a ground connection for the body to frame or body to battery.

Aug 10, 2012 | Chevrolet Silverado 1500 Cars & Trucks

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Drive side brake light works when headlights are off ,but when headlights are on,it doesnt,wondering what is causing this?

There is a bad ground in your tail lamps. The brake light works with the headlamps off because the brake lamps have a good ground. When you turn on your running lights with the bad ground, they try to ground through the brake lamp circuit.

Jan 24, 2011 | 1999 Jeep Grand Cherokee

1 Answer

The brake light and signal light on the rear right side do not work when the brake is pressed or the signal light is engadged... the lights themselves are in working order ... could this be a wiring...

Check the ground wire.The bulb has 2 filaments in it,one for the signal,and the other for the brake.If the ground wire is broken neither will work.ground a test light and check the two hot wires and see if it lights the test light,if it does,there is an open ground.ground the bulb on that side to the vehicle and see if it works.

Jan 03, 2011 | 1989 Jeep Cherokee

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Brake light, reverse light and turn signal issues

Hello. The symptoms you are describing are likely due to a poor ground. Temporarily install a new ground wire by securing a piece of copper wire to the frame with a self tapping screw. Use this ground wire along with the hot wire to see if each of these lights works. If it does, trace the ground wire back to the frame, unscrew it and clean up the metal with emery cloth so you reestablish a good ground.

Jan 28, 2010 | 2003 Ford Windstar

1 Answer

When brakes are applied parking and dash board lights come on.when headlights are on,brake lights and tail lights do not work.very first symptom was an intermittent tail or brake light out indicator...

you might have an open ground wire on your brake/tail lights .. when you apply the brakes then power would flow thru the brake light (not see ground) so would then provide power backwards thru the parking light (common ground open) to all the other things connected to the parking lights .. like the other parking lights and dash ... when you turn power on to those things (headlights on) then there is 12 volts on both sides of the light .. thats why the lights quit working ... if the missing ground is the problem then most of the lights that are improperly turning on should be at a lowered brightness level.. interesting problem .. its also possible to have a brake light bulb that has the common ground open inside or not making connection with its socket .. i would start by removing the brake lamps and see if the problem goes away .. if it does look for a broken ground or damaged lamp ..

Oct 12, 2009 | 1994 Honda Accord

2 Answers

1992 Nissan 300zx Brake lights don't work

Need to check around for bad grounds,look around for loose wires.

Jun 22, 2009 | 1993 Nissan 300ZX

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Brake lights stop working

it sounds like a bad ground .try pulling out the light and check the ground make sure there is a good ground.

Feb 21, 2009 | 2001 Chevrolet Venture

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Brake light problem

back feed causing the brake light to ground off of the head lights caused by bad ground or possible short

Oct 24, 2008 | 2002 Jeep Grand Cherokee

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