Oh, I didn't realize you were adding it to the truck also. There's a giant thread here with about everything you'd ever need to know:
So I had some questions regarding the different tow / trailer camera options in my 2022 2500 Limited build. [MOD: Questions answered in post 19 and 20] I was clogging up the other “order” thread so I’m moving my questions over here to the towing section I believe @Jimmy07 answered most of my...
hdrams.com
And a quick FAQ here:
This is intended to be a brief roll-up FAQ with links to the relevant threads related to all towing cameras. It should also help those seeking guidance to understand what each is and what they are called. There's an extensive thread here detailing the options...
hdrams.com
As far as the 12 pin connector pinout, here's what I saved in my notes from the giant thread:
Pin 1 (Red) is common power (Aux #1, Aux #2)
Pin 2 (Open)
Pin 3 (Open)
Pin 4 (Open)
Pin 5 (Open)
Pin 6 (Black) is common ground (Aux #1, Aux #2),
Pin 7 (Brown) is Aux Camera #2
Pin 8 (Grey) is Aux Camera #1 Shield
Pin 9 (Green) is Aux Camera #1 Signal
Pin 10 (White) is Aux Camera #1 Return
Pin 11 (Blue) is Aux Camera #2
Pin 12 (Yellow) is Aux Camera #2
All that info is likely credit Jimmy07, I just saved it off as I thought I'd have to add it to my truck as well.