My 2019 Airstream International Signature 25RB is plugged into the same electrical outlet that my Father installed for his '56 18' owned from '57 thru '90.
(which will be upgraded soon to a 50/30/110 GE RV panel) I towed my little used Certified trailer (Maxine) home with my 2020 GMC Sierra
1500 Denali Carbon Pro Duramax (Max), and it has yet to venture out into the world. I am still outfitting/system checking/studying systems prior to taking that first epic Airstream adventure. This forum has been very informative along with You Tube, manuals, and the Airstream Company and my AS Dealer, and friends, in my search for answers and solutions to the many issues that ownership of these modern marvels entails. I am looking forward to visiting many of the wonders in both the US and Canada, and also visiting family, some of whom I have never met. Making new friends along the way will be an added bonus.
Thank You and Cheers to all.