Light switches are located on the right side of the kitchen block, in the roof and in the trunk or on the C-pillar and can also be switched on / off via the on-board display.
Do not charge any device in the driver's cab via USB when stationary. The starter battery can discharge!
The 230V socket next to the kitchen block behind the driver's seat only works with an external power connection.
The USB ports and 12V sockets (roof tent, right at rear seat, trunk) also work without external power connection. But the camping battery must be charged. Only for small electrical appliances, e.g. cell phone, laptop (no kettle, hair dryer, etc.).