thanks argento, super helpful!
Any reason you went with the SIIG aux instead of something just like the anker aux like
https://www.amazon.com/dp/B00R11WPK4?
For the sound i'm also wondering if theres a way to bypass using the aux and run it the same way the factory unit came. If theres an optical cable coming from the amp (for the top end audio packages), i'm wondering if we can just run that into the new setup for the audio. Any ideas?