Question about 1986 Pontiac Fiero

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Fuse blowing i have a 1986 pontiac fiero gt, i have no tail and marker lights, everytime i turn on the park lights the fuse blows instantly.

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  • yadayada
    yadayada May 11, 2010

    U have a wire that has rubbed through the insulation somewhere in the wiring harness, there is no magic fix, it is very seldom a simple thing to fix, dig in and get to it, time is all it takes, u will find it.

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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.

Posted on Dec 11, 2008

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Running lights, marker lights, and dash lights all come from the park light switch of the head light switch. So, possibly you need a new headlight switch. Or, if you have a voltmeter, you can do some testing of circuits to see where power is and where lost. Also check the fuse for tail lights and horn.

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I'm not an expert on the electrical part of the 04 maxima. But I noticed on one of the websites I normally visit that it could be a blown bulb on the passenger side vanity mirror. Here's the quote:

2004 Maxima Tail Lights and Parking Lights fuse blows when interior dome light is on Discovered that my tail lights and parking lights fuse (next to the window washer box which took me a couple of hours to find!) would blow everytime I turned interior dome light on. First I thought it was my Ipod and then maybe moisture was getting in through a small crack in the left rear tail light. Sat in my car last night with a box of fuses and did everything one at a time. It was the turning on of my dome light that caused the fuse to blow. It was instant. I have a blown bulb in the passenger side vanity sun-viser flap. I will change that tomorrow and post an update.


He hasn't updated on the results of changing his vanity mirror bulb. I hope this helps...I hate car electrical problems...So hard to diagnose...

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Tail lights wont come on keeps blowing fuse blows 10 amp 15 amp and even 5 amp fuses


put a 12 volt light bulb in place of the fuse. It will stay lit until you find the short circuit. Check tail and park light & side marker bulbs first.

How about if you just turn parking lights on, not headligths

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1 Answer

Tail lights don't work, but brake, flash and hazzard work.


generally when the fuse is ok and the bulb is ok the problem is corrosion of the ground wire and connection to the frame, or corrosion in the bulb sockets. for starters go to any auto parts store and get an aerosol can of contact cleaner especially for auto bulbs and connections.

Aug 28, 2009 | 1984 Pontiac Fiero

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My brake lights work but the tail lights and license plate light don't work every time I turn on the fuse it blows I have a 1984 pontiac fiero.


Remove all bulbs on the tail lights and license plate circuit.
Replace fuse, turn on parking lamps- check if fuse blows without any lamps connected.
If it does, check for short circuit to ground on the taillight/license plate wiring.

If it doesn't blow, re-install one lamp at a time until all lights work. you may have a faulty lamp or lampsocket.

Jul 07, 2009 | 1985 Pontiac Fiero

2 Answers

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If it only happens when you turn the switchto the parking lights then it is most likely the swich that is the problem. Light swich failure appears to be a common fault with fords

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1 Answer

Tail lights fora 1986 Fiero


rear of the car is totally different, if you want to do the gt conversion you will need to exchange the whole rear clip.
gt light are wider,cant use just the lens or cover.check for parts at vegas fiero club

Jan 27, 2009 | 1986 Pontiac Fiero

1 Answer

I have no tail or marker lights, every time i hit the park light switch the fuse blows.


Sounds like you have a short. More than likely it is the swith. If not, check the wires in the trunk.

Dec 11, 2008 | Pontiac Fiero Cars & Trucks

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