This past weekend I installed a Pioneer MVH-1400NEX unit with Car Play and a micro bypass unit in my 1998 Boxster. I pieced together info/pictures from various sources, but there was nothing all together in one place that I could find. So per usual when faced with this learning curve, I created a video and put it on YouTube to help (or warn, in some cases) others. Hopefully someone can find it helpful. If you do, please like and subscribe
https://youtu.be/JcAX-J25gjQ