Question about 1986 Pontiac Fiero

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I have a 1986 Fiero notchback.Tail parking backup and brake lights don't work. Everything on the front of the car works. The turn signals light up on the front of the car but don't flash. I checked the fuses bulbs switches and the flasher all are fine. I would like to find where the ground points are and if I can get at the harness to trouble shoot it.

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Hi,

You got a connection in the rear loom which has either come unclipped or is needing to be cleaned.
So check your connections in the rear wiring of the vehicle.

It can also be a faulty earth connection in the rear loom so check these also.

Hope this helps, let me know if you need more information.

Thanks

Jason

Posted on Oct 14, 2010

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How do i go about my tail lights not working? Everything else works signal,brakes,headlights all work but no tail lights? Do u know wat could be the problem


Are the front park lights operational? These are tied into the tail lights as well. If the front park lights are operational and the rear are not, suspect bad/burned out bulbs. If no park lights operational, suspect fuse or wiring

Jun 06, 2015 | Cars & Trucks

1 Answer

Tail lights not working but the brake and turn signal works


no year, ? check the haz fuse. at left knee.? a wild guess. no year.
parking lights, the work on the front and rear. not just tail.
the parking lights and brake and turn all are controlled by the hazard module. and on jeeps , turns and brakes are a shared resource (blubs)
major warngler mile stones, all vastly different. are and i quote.
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Nov 26, 2013 | Jeep Wrangler Cars & Trucks

1 Answer

Tail lights


It sounds like a problem in the main harness.
The brake lights are on the same circuit as the turn signals and hazards, but the parking lights and backup lights are on different ones. So the only thing connecting all three is the ground circuit. The tail lights use a printed circuit board in the lamp assembly that could have problems, but not usually for both sides at the same time.
All you can do is use a test light or meter and trace the circuits from the light bulbs back to the firewall and see where the power is stopping.

Jun 24, 2013 | 1988 GMC C1500

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1991 Park avenue, Tail lights and license's plate light's stopped working turn signal's hazards and brake lights still functional. but no tail lights or license plate lights


Check for Power on your License Plate Light, more than likely you have lost GROUND

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I have no break lights or turn signals


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

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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

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How to replace Parking, turn, and Brake Lights on car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-parking-turn-and-brake.html

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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

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Chevrolet Parking light and Tail lamp light Wiring diagram http://schematicsdiagram.blogspot.com/2012/11/chevrolet-parking-light-and-tail-lamp.html

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http://schematicsdiagram.blogspot.com/2011/12/car-tail-lights-not-working.html

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http://schematicsdiagram.blogspot.com/2011/12/right-turn-signal-not-working-on.html

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http://schematicsdiagram.blogspot.com/2011/12/only-one-side-indicator-light-working.html

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1996 Chrysler LHS brake light circuit wiring diagram?

http://technoanswers.blogspot.in/2012/02/1996-chrysler-lhs-brake-light-circuit.html

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How to replace rear Brake lights on 2004 Toyota RAV4? http://schematicsdiagram.blogspot.in/2012/02/how-to-replace-rear-brake-lights-on.html

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http://schematicsdiagram.blogspot.com/2011/12/one-brake-light-on-driver-side-not.html

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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

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Overhead Brake lights not working on 1999 GMC Sierra 4x4?

http://technoanswers.blogspot.in/2012/03/overhead-brake-lights-not-working-on.html

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2004 Ford Mustang: Brake light Fuse Location?

http://howtobyme.blogspot.in/2012/05/2004-ford-mustang-brake-light-fuse.html

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These will help.

Thanks.

Nov 24, 2012 | Cars & Trucks

1 Answer

Chevy S10. When my running lights are on everything works (except turn signals), front lights, tail lights brake lights. When I turn on my headlights turn signals still dont work everything comes on fine...


Check the grounds on your wiring.
If you have a trailer harness, make sure there are no shorts, or crusty connections

Good Luck chasing the gremlins

Oct 13, 2010 | 1996 Chevrolet K1500

1 Answer

My 2003 Pontiac Vibe tail lights do not work. The brake lights work. I checked the tail fuse. Turn signals work also. Why no tail lights?


Your turn signal lights and brake lights are the same lights . Question : do the front parking lights work ? The front and rear running lights or parking lights are all on the same circuit and fuse . If the front lights work , and the rear lights don't , make sure the bulbs are good first . If OK , I would suspect the problem is either a bad ground in the rear taillight wiring harness or a bad connection in the rear taillight connector Itself .

Sep 16, 2010 | 2003 Pontiac Vibe

1 Answer

Fuse blowing


I agree. I would start by inspecting from the tail lights wiring and move up. You will have to remove interior pannels to see the harness.

Dec 11, 2008 | 1986 Pontiac Fiero

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