Back-country travelers are using Amateur Radio for wilderness communications because of the greater range. Many have a Citizen Band radio because it is ubiquitous even though the range is limited.
Campbell needs a trailer brake controller to pick up Cocoon, our Casita travel trailer from the factory. We chose to install the Redarc Pro Elite controller.
I updated the maps in our 2013 Land Cruiser from 2012 to 2018. The installation also updates the head unit software. The Navi is Gen7, so it also works for 2012 and 2014 Land Cruisers, among other models.