You will need a wiring harness for the 2018+ to connect the RV to the Wrangler for brake lights, turn signals, and marker lights.
I went with cooltech's wiring harness, very simple.
As far as the Death Wobble (DW), this is something that has been addressed thru multiple recall campaigns. There are 4 revisions of the steering box, and 2 recalls on welds.
If you have a 2018, you will have to get multiple recall campaings completed.
2019 has 3 or 4 open campaigns.
2020's manufactured before July of 2019 has 1 or 2 campaigns. After Aug 1, the line implemented all known campaigns, and there have not been any new ones.
The welds are the single largest issue affecting 2018-2019. The gear box is the second. Looking at the gearbox revision is the best way to know if you need to have a recall done.
DO NOT accept a steering damper as the sole fix, this has already been proven to be a bandaid to mask the problem. The steering gear box is the only true fix. There is no need for a damper with the corrected gear box.
What is Death Wobble?