B190 Enthusiasts

Girlie question here. The converter under the couch, on my 1995, has two switches. A green one on the left and a red one on the right. The label under the green one says "Main". Under the red one is written "univolt".

What ones should be on/off if plugged into shore power? Green on, red off?
Or should both switches be left on all the time?

Should both switches be on for the house battery to charge?

The univolt is the converter, which charges the coach battery and the 12 volt coach electrical system. You'd want both of switches on during normal usage, assuming the "main" switch also cuts power to the "univolt" switch.