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Electrical Help Required - Keep Blowing Parkers Fuse

Trav33

By Trav33,
in General Maintenance

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Trav33 Mentor

Trav33

Posted
Posted

I'm about ready to go to an auto-electrican, so if anyone can help diagnose and solve my problem, i'll forward $50 your way. I studied a couple years of electrical engineering, and am handy with a multimeter, so not a complete newbie!

My parkers circuit in my 33 keeps blowing fuses under the bonnet, from what i can work out, the following source power through that particular fuse:

- front parkers

- rear tail light parkers

- number plate light

- dash illumination

- radio illumination wire

- beeper under dash when door is open, or lights left on

- somehow the interior light is also effected, as now when it is set to door, it stays on all the time - and with the lights turned on, it is only half-brightness which is weird behaviour.

I've tried to inspect front parker globes, numberplate light, no visual shorts. Removed dash cluster, still blowing fuses. Checked radio illumination wire, taped up well. Checked one brake light, visually ok. Hard to check the other light due to my boot install. Checked the resistance accross the two wires going to the unplugged numberplate light , approx 0.5 Ohms indicating a short somewhere. Unplugged column switch, still 0.5 Ohms accross numberplate light, so not the actual switching mechanism.

When i put a new fuse in, my beeper works ok, and key ignition lights up, as soon as i turn on parkers, fuse blows.

I'm happy to cut the relevant wire along the side of the car, to help isolate the problem to the front/rear end of the car, not sure on wiring colours though.

Any smart auto-electricans who can provide assistance?????

blind_elk Grand Master

blind_elk

Posted
Posted

How long have you had the problem? What have you done recently that might have upset the wiring?

Remove ALL the globes (or disconnect the wire to the globe), including instrument cluster. Now add them back one at a time, until you find a combo that blows the fuse.

RANDY Veteran

RANDY

Posted
Posted

So if you're sure there's a short... I guess it's a matter of finding out where it is?

If you go to continuity mode, and test the positive of a globe socket to the chassis of the car... does it show a short? I'm not sure what kind of resistance between + and - you should normally see... so that's the way I generally test. A bad earth shows up with the above method also. (as you probably know)

Failing that, could you perhaps test from one terminal of the fuse holder to the rear plate (with very long extension cables on the multimeter) with the multimeter set to "volts"? That would show how much, if any, voltage is being dropped across that piece of wire. I guess if that works as a good test, you could then try each suspect point until you narrow down the cable that's shorting?

  • 2 weeks later...
calsonic1 Newbie

calsonic1

Posted
Posted

hey fellas,

man i had d exact same problem i got a gtst 97 s2, i got an auto electician to do it, took about an hr, it is defiently a short. my one was a short from the wires coming outta the fog lights, or around that area... sorry its not much help man but i remmember the electrician put this thing that has a light bulb connected to it onto the fuse the light stayed on he kept putting the other end onto different wire connections untill the light went out he disconnected it put in a new fuse and it never blew.

Black Ninja Experienced

Black Ninja

Posted
Posted

did you install anything lately ?? car audio, amp etc ? Last time mine was the F*^%$$^% audio tech accidentally wire up the ground wire of the audio to the dash light +ve. So every time i turn on my lights the fuse blown.. it took me 2 hrs to find it. :P

  • 4 weeks later...
lrl Newbie

lrl

Posted
Posted

Hello,

I have exactly the same problem. Has anyone found the solution?

My R33 had some aftermarket fog lights fitted whenI bought the car. Someone recently stole them off my car. I took out all the wiring relating to the fog lights. The fuse still keeps blowing when I turn on my lights.

Any help is appreciated!

Luke

  • 1 year later...
MissSky Explorer

MissSky

Posted
Posted

Hi guys ok i am having the same problem here my rear parkers, dash light nothing is working everytime i put a new fuse in and turn the lights on it blows. Have checked everything under the sun and still can not find the problem... can any one PLEASE help its mad because i cant drive my car at night!!!

PLEASE HELP

BeEnAr Experienced

BeEnAr

Posted
Posted

I had a problem like this once in my Falcon. Parker lights, interior lights, dash lights, stop tails, and indicators would all blow constantly both globes and fuses. Turned out to be the indicator flasher box in the fuse panel of all things (the thing that makes the tic tok tic tok) maybe try that, they are about $15 couldn't hurt I guess :)

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