Here is a photo of the pin-out for the 2016 models in case it helps anyone! I was taking apart my center console today so I figured I would get a picture.
by chance did you happen to run into the Sirius tuner while you were taking this out
I have a 2015 Mazda 6 touring and trying to find the tuner so that I can use the existing Fin antenna for my Pioneer Inno portable radio.
Look at all those connectors! Wouldn't it be nice if the car audio industry settled on a standard a la USB (or something like it)?
Thanks for the pics though! That is an interesting looking "double stack" of gear that makes up the infotainment system.