Caunteton

Hi all, Our 2007 23C “Classic” had a 18W solar panel, which I removed as it was broken. I replaced the broken panel with a set of three 15W panels (because they were free, never been used and that’s all I need for our purposes). The “Systems Monitor” panel mounted to the side of the refrigerator includes a toggle (?) switch labeled, “Solar Panel”. I do not know what this is for. Do you switch it on when the solar panel(s) is (are) charging? A related question: Does the three-setting black switch near the door entrance near the floor (for the cable system, off and 12-volt on) need to be “on” for the the solar panel to work (i.e. act as a source of power)? Thank you for your help with this.