We recently bought this rv low miles well kept..supposedly everything worked .. well the generator would try to turn over and eventually we had to replace starter .. now runs like a gem ..except no power .. everyone speaks of an automatic switch for it to roll over to gen power .. we cannot locate this is it possible that previous owner bypassed this or does anyone know location for this switch in our rv.. it does not appear to have any place to plug the shore power cord in so it should have auto switch by all the research I've done..thank you for any help..(yes we've tried all breakers inside and on gen I did see one guy video speak of a 12 volt power switch that may be off but he gave no directions to find this switch either if that is also a possibility...)