Replace the blown fuse with a pair of spade terminals, then use a pair of small jumper wires to connect them to a 12 volt light bulb. For this circuit a brake light bulb should work well. When the circuit is powered up and the short is present, the bulb will be full brightness. It will get hot so be sure it isn't laying on carpeting or against a plastic door panel. Now you can move wire harnesses around and unplug things to see what makes the short go away. When it does, the bulb will get dim or go out.
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Tuesday, October 20th, 2015 AT 5:43 PM