My dear friend is letting me test drive Sovereign this June, taking fam to Yellowstone from San Antonio, need to book KOAs. Default is 30amp connection, right? Forgive ignorance, trying to learn all things in next 2 weeks...
You should carry a 50 amp to 30 amp connector since 50 amp outlets at the campsite are the more common now. Then you can book either one. Something like the one listed below on Amazon. Some places will lend you one with a large deposit.
"Camco Heavy Duty RV Dogbone Electrical Adapter with Innovative 180 Degree Bend Design and Easy PowerGrip Handle - 50 Amp Male To 30 Amp Female, 18" (55175)
by Camco
$12.44 $ 1"
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