Roger beep help!!!

[15minigrass]

blk -
red +

white - audio
green - tx


red&purple - break between TX wire from Mic connecto and main board.????? these are 2 pins coming out of the board.

Can also be seen here, right above the relay.

http://www.walcottcb.com/rb2-roger-beep-si...beep-p-466.html

 

[15minigrass]

if its talkback, how do I hook it up?????