Brewbud
Brewmeister Meisterbrew
When in reverse on my 2020 with the 12" neither of the two wheels will adjust the brightness. It also doesn't matter whether the lights are off, on, or in auto mode, the reverse screen is full brightness.I can control the screen brightness on my truck in reverse. I can't say that I have ever had an issue in any of my Ram trucks that have had a back up cam, 2014 thru 2022, being to bright in reverse.
I see other posts about it on GM forums and other Ram forums but nothing crazy like mutli pp le page threads..not that it's not a legit thing...but maybe user adjustment is needed.