Speaker polarity battery hack #handymantip

You can use a regular dc battery, such as a 9-volt, to figure out the polarity of speakers. To do this, connect the speaker wire to the battery- positive to positive, and negative to negative. If the speaker pushes out, whatever wire is touching the positive tip of the battery is positive. But if the speaker pushes in, then you know you need to reverse the wiring.

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Do this once a year to help prevent an electrical fire

To help prevent an electrical fire, simply tightening the screws in light fixtures will reduce the risk of an electrical fire occurring.

Or, you can hire me to help maintain your light fixtures instead.

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