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1999 Mercury Cougar lights, fuses

Tiny
SHAYM85
  • MEMBER
  • 1999 MERCURY COUGAR
  • 109,175 MILES
I've tried changing the fuses but can't seem to figure out why they keep popping, and when they do, my blinkers, heater and breaklights no longer work. Can you tell me why or how to fix this? My hazard lights still work as well as my tail lights and high beams
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Thursday, September 19th, 2013 AT 12:17 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,908 POSTS
A simple trick to finding a short is to replace the blown fuse with a pair of spade terminals, then use small jumper wires to connect them to a 12 volt light bulb. A brake light bulb works well. When the circuit is live and the short is present, the bulb will be full brightness and hot so be sure it's not laying on the carpet or against a plastic door panel. Now you can unplug electrical connectors and move things around to see what makes the short go away. When it does, the bulb will get dim or go out.
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Thursday, September 19th, 2013 AT 12:25 PM

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