To recap for pre-2021 owners that want to do this:
You need a 2021-2022 BCM, and it can be for a DT 1500, or an HD Ram. It can be new or used. If it’s new, I’m not 100% certain if it’ll work right out of the box because it’s still in ship mode and its program status is not set. If you mail it to me, I can change those settings on the bench and send it back with the harness, or it can be done if you have Jscan. If it’s used, nothing needs to be done to it.
As far as straight up swapping in a brand new 2021 or 2022 DT BCM (instead of using it as a slave), I’m not sure if the dealer can do that or not. Someone would have to be the first to try. I tried running the BCM replace procedure on Vincent’s with a dealer scan tool and aftermarket wiTECH 2 subscription and his correct PIN, but I got an error that I don’t know what it means.
So, if just using a BCM as a slave like Vincent did, you’ll be looking for these BCM part numbers:
2021 DT- 68496414AE
2022 DT- 68526275AD
2021 HD- 68482884AD
2022 HD- 68526535AC
2021/22 mirror, no forward collision warning- 68448639AB - Listed for 1500
2021/22 mirror, forward collision warning equipped- 68448641AB - Listed for 1500
2022 mirror, with tow mode camera input, no FCW- 68519111AA - Listed for 2500/3500
2022 mirror, with tow mode camera input, FCW equipped- 68519222AA - Listed for 2500/3500
If you do not have FCW, and you do not have automatic high beams, use the mirror part numbers for a FCW equipped vehicle so the mirror cover will fit back on.
If you do not have FCW, but you do have automatic high beams, the automatic high beam feature will no longer work when using a digital rear view mirror.
Auto dim will not work for the rear view mirror, either.