5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Electircal Problem

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Old Feb 28, 2004 | 07:49 PM
  #1  
PNutt's Avatar
PNutt
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Default Electircal Problem

Hi everyone.

Long story short.
I've got an 86 EFI GT. The car runs fine, but the stereo and the dome light do not work, so I checked to see if I have a burnt out fuse, and sure enough, I find one.

I access the fuse box and locate the burnt out fuse. I then disconnect the battery and proceed to put in my new fuse.
I put it in (no problems yet) then go to hook up the battery and the battery sparks. I go back to the new fuse I just put in and its burnt out again. I try this a multitude of ways...leaving the battery hooked up and replacing the fuse, only disconnecting the neg terminal, even trying some tougher fuses, etc... Every time I either get a spark at the fuse or the battery, which ends up burning the same fuse up.

Could this be some sort of short circuit? Has anyone else had this problem before?
Thanks in advance for any help
Old Feb 29, 2004 | 01:31 PM
  #2  
Quik's Avatar
Quik
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Joined: Nov 2003
Posts: 5,182
From: Pittsburgh, PA
Default RE: Electircal Problem

your problem doesnt take an electrician to figure it out. you have a short some where with your stereo. disconnect the stereo and then replace the fuse then reconnect the battery. if it doesnt burn up then you wired the stereo wrong. if it does then you got more problems
Old Feb 29, 2004 | 08:02 PM
  #3  
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n2o44
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Joined: Jun 2003
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Default RE: Electircal Problem

you have a short to ground before the load in the crk , it sound like you may not know too much about electronic stuff , but you can at least try to isolate it by disconecting stuff , but it starts to waste fuses, u would need a crk breaker that resets , some one decent with car electrical sys should find it since its a hard short and not one that goes away , if you cant find it find a buddy , it shouldint be major
Old Feb 29, 2004 | 08:38 PM
  #4  
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PNutt
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Default RE: Electircal Problem

I thought it might have something to do with the stereo.
I'm going to have a buddy check it out that does stereo installs. He says that he has got the equipment to find it.
I'm just hoping that it's just it is somewhere in the stereo circuit and not a short somewhere else.
Thx for the suggestions guys.
Peace
Old Mar 1, 2004 | 01:26 AM
  #5  
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nasty5pt0
 
Joined: Feb 2004
Posts: 13
From: United States
Default RE: Electircal Problem

the yellow wire behind your headunit (constant 12 volts) or the red wire (switched power) is touching ground somewhere along the line
Old Mar 1, 2004 | 01:32 AM
  #6  
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TheGmKiller331
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Default RE: Electircal Problem

You need a multi meter to find the issue.Was the stereo put in recently?When did it start this?
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