You would think, to keep the number of different truck harness family part numbers simple, that selecting XFQ would have all 10 possible wires populated in the 12-pin trailer connector, but I’m not sure how they’ll play that one. They might prep the truck with the exact same XFQ wiring as they did for 2020-2021, which would not include the canbus wires necessary for XN1 in positions 2&3 on the 12-pin. And, conversely, if you only get XN1, they might not include wires prepped in positions 8,9,&10 for an aux camera on the 12-pin.
Right now, the biggest challenge to retrofitting XN1 on a truck not originally equipped with it is getting the settings for it enabled in the BCM. They are not there in AlfaOBD yet, and Ram has already said “this option can’t be added after”, which means they won’t make the sales code available to dealer techs on wiTECH.
If ANYTHING, I would get XN1, and not worry about XFQ. That way, the MOST you would have to do if you wanted to add an aux camera is populate 3 wires, and enable the aux trailer camera setting that we already know exists in AlfaOBD.
I wouldn’t think so. In previous years, the only requirement for having XFQ added was that you needed to choose at least one of the 8.4 radios (because the 5” radios don’t have the aux camera input capabilities).