If you have 3 lights upstairs and 3 switches downstairs you can only make 1 trip upstairs how can you tell which switch works which light?
Flip 1 on wait 5 mins. Then turn it off. Now flip another - run upstairs. The light that's on is the switch just flipped. Feel the other 2 lights, the 1 that is hot is the one left on for 5 mins. The 'cool' bulb belongs to the switch didn't touch.
Answered by Brian Y. -
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