Hello, in my earphone there are 4 wires red green copper and black which one is for audio

[priyapushapam05]

I have to make a project
Li Fi
It will require to cut the audio wire
Which one is the audio wire
Red
Black
Green or
Copper

 

[hang-the-9]

You would need to check with the maker of your device, there is really no set standard for colors they are forced to use.