Glad I found this forum! I just picked up a 2017 stock head unit - nav & Carplay, etc. I can tell you that the connections are NOT the same as what I've got in my 2015 Mirage with the base radio. I found a pinout for my 2015's connections here:
http://audiowiringdiagram.com/car/20...olors-install/ but I am not sure it's quite right. It's actually really hard to find the pinouts online for the Mirage base radio! Next, I'm going to search around for the other vehicles use the 2017 head unit (Mits part number MZ360500EX), like the Lancer and Outlander to see what the pinouts for that unit are. Wish me luck; I will post if I find anything interesting!