"Ken" wrote...
1-sh &bl common
2-wh audio
3-red tx
4-blk rx

The colors above are for an astatic mic.
www.copper.com

On my site, there is a microphone wiring database. You select the radio from a drop down list.
If you also select the microphone you are using, it will give you a diagram with wire colours.
http://www.citizensband.radiouk.com/...jects/mics.php


Regards,
Peter.
http://www.citizensband.radiouk.com/