Hi. I have just bought a 2004 Swift Sundance 630L , which I think has its own solar panel on the roof? . I already have a big briefcase solar panel from our last M/H. Is there any way to connect the old panel as well for when we are off grid for a week? The leisure battery is right in the middle of the floor, and I don't want wires trailing .... We do use a lot of power as Hubby likes his TV..