Well folks - another important public service announcement.
If you are going to order/buy a 2025, make sure that you order the trailer controller from the factory. It is a $290 option.
At this point, dealers have no clue about adding this.
Mine did not come with one, I did order the controller that supposedly should work on 2025.
Went to my dealer for installation this morning.
1- the controller cannot be mounted under the dash like the older models
2- the tech could not find any wires under the dash
3- dealer has no clue about the correct part / location - they will call the factory to get more info.
4- 2025 has a completely different wiring harness / electrical system architecture.
I have another thread on this specific topic - per Jimmy, the controller is mounted behind the back seat. He posted a picture.
I added the switch to the dash. However, where the control box should be mounted under the dash is different. There is a square black plastic box mounted where the bracket for the control box should be mounted. Sorry - did not take a picture. Called a few dealers, but they have not installed one...
5thgenrams.com
So, I will wait and see what the dealer is going to come back with.