We pull our Airstream with a 2020 Sport.
The RR dealer was no help but our Airstream dealer recommended wireless.
I was a bit skeptic at first but it does work great.
There are many options. We went with the Tekonsha Prodigy RF Wireless Trailer Brake Controller
There is some minor installation required to mount the receiver module to the tounge of the trailer but it's just a few screws. Then your trailer cord plugs into the module and the cord from the module plugs into the truck. The handheld remote plugs into a cigarette lighter port. Pair it and adjust and your good to go.