I believe that Yaesu used an alternative cable source during some micphone production runs and that microphones of the same type and model number may have differing colours in the connecting cable. If the scheme you have differs from the one below please let me know and I can add it here. Thanks.
| 6 Wire Cable | |
|---|---|
| Colour | Function |
| Not shown? but will be shielded wire. | Audio |
| Shield/Braid | Common Ground & Common Up / Down |
| Black | PTT |
| Blue | Down |
| Brown | Up |
| Red | + volts from radio |