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Finding a short.

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Old Feb 24, 2002 | 06:56 PM
  #1  
destiny88's Avatar
destiny88
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From: Oshawa Canada
Finding a short.

I am still new here, and I have a tip which might have been brought up in a different forum.

If you have a vehicle thet is blowing fuses. Take a headlight and put two wires on it. Take these two wires and use a flat terminal at the end, insert them where the fuse goes, watch how bright the light is. The light should not be bright with the accesories off that run off that fuse. One at a time turn the things on that use that fuse. When the light gets really bright you have probably found the short.

A example is I had an 96 Lincoln limo in the shop. It would blow the signal fuse. I put the headlight in where the fuse goes, it did not light, turn on the riht signal it was dim, OK, I turned on the left it would go real bright, problem in the left turn side. I took the bulbs out of the tail lights, it was a little less bright. When I unhooked the boomerang on the trunk, the light went real dim. Put the bulbs back in the tail light and it was dim. Removed the headlight and put the fuse back in. The system was fine. I found that the wires that run through the trunk to the boomerang had rubbed through to ground.

The idea behind the headlight is that it saves a pile of fuses. If you have a intermittent short, connect the light and move the harness for that circuit. If the light goes real bright, ther is a good path to ground you do not want.



 
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Old Feb 24, 2002 | 11:14 PM
  #2  
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Finding a short.

Excellent idea. Another one: use an 1157 bulb in line between the - post on the battery and the cable. If it does not light up the draw is normal eg stereo, clock,computer etc. If it lights up the is a short to ground and is draining down your battery. bountyhunter
 
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Old Mar 9, 2002 | 11:45 AM
  #3  
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wolfmanagh
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From: Twin Cities, MN
Finding a short.

another option to blowing all your fuses would be to use a circuit breaker from an old car at the bone yard.
also I get my fuses from the bone yard when I go there to get a part I go through some cars and pull fuses and put them in my pocket.

 
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Old Mar 10, 2002 | 03:14 PM
  #4  
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Finding a short.

An ammeter will work, too.:P
 
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Old Mar 12, 2002 | 12:37 PM
  #5  
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Mil1ion
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Finding a short.

 
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