Install CarPlay fairly simple, all you need to do is to get a Autokit USB adapter that you can plug into your phone and then you can download CarPlay app, it's super simple to have it on Android head unit.
How to do it?
First you are going to find Google Chrome or internet browser and download a Autokit.apk "http://22.214.171.124:8080/autokit/autokit.apk" for the Android unit.
Open the download apk app and click "install"
Plug Autokit USB adapter into the extra USBS
Get start with Apple CarPlay