Useless, and even worse, damaging.

Thia style of tap is garbage. These have failed every single time i ve used them, even after using pliers to seat tap and tape to hold the assembly together. They damage the supply wire terribly, often leaving only 3 or 4 strands unbroken. Do not buy these. Watch a few youtube videos on splice taps if you feel you need to run power from an existing component feed.

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