The Old Headlight Trick, Find and Fix Short Circuits Faster
 

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Fuse-popping shorts in electrical circuits can be hard to locate. Younger techs have been known to incinerate a couple dozen fuses looking for a voltage short to ground, while the truly fearless among us simply install a fat jumper wire in place of the fuse, and follow the smoke from burning insulation. Neither approach will garner the "top troubleshooter" award.

Here's a fasty and easy way to test those shorts safely. The procedure is rock simple and fiendishly effective