Greetings! Day 3 of install... I've replaced bose amp and speakers with aftermarket, retaining head unit. Im at the final stage, but need to know if the hands free mic for phone is wired to deck or bose amp. THANK YOU!
If I recall correctly from my 2016, the regular hands-free mic connects into the back of the HU itself, but then there is also the Bose AudioPilot mic which I'm pretty sure connects directly to the Bose amp. There are some pretty good historical threads on here with wiring diagrams and connector photos for the earlier year headunits. Here is one: