If you were to wire a 4 pin audio cable to a 3 pin jack which two wires would be joined? Eg. TP120 jack being replaced with a 3.5mm jack. - Quora
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Making a [4-Pole TRRS to 3.5mm Stereo & Mic Adapter (Male to 2x Female)] from an iphone headphone split… | Earphones wire, Electronic schematics, Headphone splitter
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10pcs 3.5mm Female Audio Connector 3 Pin Smt Smd Headphone Jack Socket Pj-320b - Connectors - AliExpress
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