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Adding headphone jack to stereo bluetooth headset - Confused by wiring Answered

I have a stereo bluetooth headset which has a right channel earbud connected to the mic part and a detachable left channel earbud. I opened it up and found a green and copper colored coated wire going to the right earbud then another set of green and coppor coloerd wires going to the plug in for the left earbud. Using a left/right audio testing program on my phone I tried wiring the wires up to a set of headphones to test which wire is which. When I wire up the green right wire to the right channel and the copper colored wire to the ground I get sound through just the right channel as I would expect. When I add the green wire from the left channel to te left connection on the headphones both channels play through both sides of my headphones. When I did those tests I was assuming the copper colored wire was a ground. I then reversed the colors assuming the green wire was the ground and repeated the same test with the same results. No matter what combination I connect the wires in I cannot isolate the left channel to the left side and the right channel to the right side. Anyone have any ideas?


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6 years ago

What do you mean you cannot isolate the left channel? You have the wires that go to the left bud so that is the left channel. To narrow down which is ground trace the wires back to the board and see which ones share the same common trace. If you find both greens are on the same trace and both coppers are on the same trace then the device isn't true stereo but is dual mono.