Direct shorts

Tiny
RJHIGGINS
  • MEMBER
  • 1988 CHEVROLET VAN
  • V8
How can I find a direct short to ground
Tuesday, March 15th, 2011 AT 1:57 AM

7 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,871 POSTS
Start by replacing the fuse with a 12 volt light bulb such as a brake light. Then you can unplug things to find which ones make the light go off or dim indicating the short is removed from the circuit.
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Tuesday, March 15th, 2011 AT 2:14 AM
Tiny
RJHIGGINS
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  • 11 POSTS
I blow a fuse only when I turn on the headlights
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Tuesday, March 15th, 2011 AT 2:24 AM
Tiny
PROTECH1980
  • MEMBER
  • 901 POSTS
What fuse is blowing?
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Tuesday, March 15th, 2011 AT 2:32 AM
Tiny
RJHIGGINS
  • MEMBER
  • 11 POSTS
Tail lps 20 amp
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Tuesday, March 15th, 2011 AT 2:34 AM
Tiny
PROTECH1980
  • MEMBER
  • 901 POSTS
Do you have a trailer wire harness? Check that make sure it isnt pinched or rubbing on something causing a short to ground.
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Tuesday, March 15th, 2011 AT 2:40 AM
Tiny
RJHIGGINS
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  • 11 POSTS
No what else could it be
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Tuesday, March 15th, 2011 AT 2:45 AM
Tiny
PROTECH1980
  • MEMBER
  • 901 POSTS
Like carradiodoc stated, your going to have to make a short checker, get yourself a wiring diagram and start unplugging bulbs etc. Circuits/ and anything on that circuit, It is a process of elimination to find a short/ It will take time and testing. Anybody can guess at it, but it is you that is going to have to do the testing. I cant locate a good diagram for you, maybe one of the other guys can find or post one.
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Tuesday, March 15th, 2011 AT 3:12 AM

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