Does the factory system have a "phone in" input which mute the radio/cd when recieving a phonecall?

Thanks,

 

yup.

There is a pin in the reciever for Mute.

take a look at the extensive diy from Shinka in MD

https://www.rx8club.com/series-i-do-yourself-forum-73/diy-moto-ihf1000-bluetooth-handsfree-cellular-power-amplifier-install-77085/
there is a huge amount of info. there is a link that has the pin location.

I am looking to do this install in a week or so....

 

Thank you very much