Completed my swap on 2019 1500 Classic Express quad, started with the 5" screen, 7 speed fan, SXM, backup camera and bluetooth. Thanks to MPGRIMM2 for all the help and building the needed harness. So first off I though I was being smart I bought a head unit from a 2019 new style big horn the UAM non nav made by Delphi, plugged it in and has some functionality but here is what did not work, backup camera, Apple carplay or Android auto and the climate control was a bit funky. So after some discussion with MPGRIMM2 realized I needed the UAQ or UAS as I have the classic which seems to retain everything from 2018 including BCM etc. These are the parts I used and everything works great, 30 min start to finish. I did not need a new hub as this is a 2019 and it had the updated version. No programming needed with AlphOBD. You may need the 911 stub depending on what you start with.
68366552AA A/C & Heater Module
1UJ96DX9AE TEMP W/CONTROL PANEL
A/C & Heater Module Conversion harness single zone manual supplied by MPGRIMM2