My CarPC is currently conneced to my stock head unt via the stock aux input. However, since I listen to my stock head unit most of the time, I am unable to hear any navigation commands from IG (embedded in RR). What I want to be able to do is allow IG to send a mute signal to my head unit when it is giving navigation guidance.
Getting my head unit to mute is pretty easy, it is just a matter of sending a ground signal to the stock head unit. The part that I don't know is possible is getting the mute signal from RR to my head unit. The current skin I am using (Blue Devil) can sense when IG is giving commands and will mute any music, video or DVD until the command is complete. So my question is can this board, with your software, sense the navigation voice "trigger" in RR and then in turn send a signal (via a relay of some sort) to mute my stock head unit?