We wish to install 130 W sola panel on our MH. Item 1. There is an roof aperture that come down in to the MH, is there a special box you place on the roof or do you just pass the cables down the aperture and fill with mastic ??. Item 2 Does the sola panel connected directly to the box in the garage, which has 2 sets of wires or do you need to install a sola controller. I am confused.