Are you talking about the USB jacks beside the passenger seat or the 12v lighter sockets (power port) on dash? If you are looking at the 120v ac socket, you need to start inverter, or start genny or plug into shore power for that. Not sure what you mean by aux power??
2015 Jayco Precept 35UN
Towing JEEP TJ with Roadmaster plates and bar w/Blue Ox Patriot brake
an Aluma low bed trailer with HD Road King and/or Polaris RZR onboard