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I'm trying to repair my headphones with a broken jack. I just purchased a replacement TRRS jack, and now my problem is knowing the function of the five different wires in my earbuds. How can I use a multimeter to do this? Thank you in advance.

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Touching the ohmmeter to the pair of wires going to each earbud and ground should cause an audible pop and show low impedance. The remaining non-ground wire would be for mic. See Fixing a headset, TRRS

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  • \$\begingroup\$ I just tried this and I can't seem to hear any audible noise. Does one lead need to be touching the ground wire and the other lead a different wire? I did this for each wire with no luck. Could it be the setting my Ohm Meter is on? \$\endgroup\$
    – Brandon R.
    Jun 27, 2016 at 22:41
  • \$\begingroup\$ It is the current through the speaker that causes a pop, so you need one lead on the audio and the other on the return. Depending on wiring, the return may be common or separate for the two sides. \$\endgroup\$
    – stark
    Jun 28, 2016 at 0:40

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