johnspoppi
New member
I need to solder wires back on my jack for my headphones. There are three color wires, red,green, and white. Which color would be the ground? Your feedback is appreciated.
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jack connection
- Thread starter johnspoppi
- Start date
silversmith
New member
There are no reliable color codes from China. You have 3 wires, figure it'll be the 9th way you try it. 
Good luck.
Good luck.GoGoGopher
New member
Usually red right, white left, green ground...but don't count on it...
HH,
HH,
johnspoppi
New member
Thanks GoGo I'll give it a try
GoGoGopher
New member
Let us know if it worked...
HH,
HH,
johnspoppi
New member
No sound, didn't work but it was worth a try.
GoGoGopher
New member
There is only so many possibilities...not sure if you can blow the audio amp if you hook it up wrong though
HH,
HH,
If you have the old jack take the cover off and copy.
If you have a multimeter you can work it out. Set it to measure resistance (ohms) x1 scale.
First lets assume the green is the earth.
Then there is a speaker connected between green/red (left say) and another between green/white (right).
If you connect the multimeter now across green/red then you'll hear a crackling sound in the left speaker only. The other will be silent.
Connect MM across green/white then the other speaker crackles.
Connect across red/white then both speakers crackle (mono mode).
You have now determined the earth because green is the common factor to make each individual speaker crackle.
With this in mind you can now say this:
If red/white combo causes both speakers to crackle then green is the earth.
If red/green combo causes both speakers to crackle then white is the earth.
If white/green combo causes both speakers to crackle then red is the earth.
hope this helps.
Note: using a MM in this way is quick way to check a speaker is working (by making it crackle).
First lets assume the green is the earth.
Then there is a speaker connected between green/red (left say) and another between green/white (right).
If you connect the multimeter now across green/red then you'll hear a crackling sound in the left speaker only. The other will be silent.
Connect MM across green/white then the other speaker crackles.
Connect across red/white then both speakers crackle (mono mode).
You have now determined the earth because green is the common factor to make each individual speaker crackle.
With this in mind you can now say this:
If red/white combo causes both speakers to crackle then green is the earth.
If red/green combo causes both speakers to crackle then white is the earth.
If white/green combo causes both speakers to crackle then red is the earth.
hope this helps.
Note: using a MM in this way is quick way to check a speaker is working (by making it crackle).