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.

Electrical help needed

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Old 11-15-2015, 12:45 PM
  #1  
spoooky11973
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Default Electrical help needed

My battery was draining dead when not using the car for a few days. I did the test with having the negative cable off and using a tester to hook from the cable to the negative side of the battery to see if there was a draw. It lit up so i knew it was drawing somewheres. I started unplugging fuses 1 by 1.When I unplugged the radio/instruments/power mirror fuse,the light went out on the tester so it was something to do with that. Is there any ideas on the fix or do I have to trace everything that the fuse powers to find the short?
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Old 11-16-2015, 07:18 AM
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88 orangepeel notch
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I'd trace the wiring to those things and just unplug them one at a time to narrow it down. Start with the radio first, then the mirrors, as those 2 are the easiest.
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Old 11-16-2015, 12:49 PM
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Boss_Hotrod
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Youd be better off using a volt meter set to amps. Even though that fuse killed the light that may be normal since the radio saves information. The standard is anything less than .050 amps is acceptable.
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