This is a question for Scampers who tow with a Subaru Outback - preferably 2016 or newer:
1. Have you installed a voltage isolator ?
2. Have you had alternator or battery problems.
The dealer installed an isolator for us, but had problems doing it. Twice since our battery has died while going down the road. The alternator produces power, but it does not go to the battery. The dealer’s solution was to disconnect th isolator.