HOW TO USE A MULTIMETER to verify polarity and voltage

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The gist of this video is, how to use a multimeter to make a duplicate of an existing plug, such as if you are wiring up a converter or adapter, or if you are building a power source like a Fatshark battery pack or a custom LiPo connector. In this case, you need to verify that the voltage and polarity of the new connector are correct. I'll show you how to do this!
The multimeter that I use is:
The clamp meter that I use is:
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