Just a single panel on the roof (cant remember if its 100w or 120w) and this MPPT controller.
www.mppsolar.com
The controller is a fair few years old now or at least mine is and I remember there was quite a buzz about them when they came out and lots of us bought them. Its brilliant as it shows you the
battery status, whats going in and if you wire sockets off it then it shows you whats going out.
I'm hopeless and DIY practical stuff also so I bought all the gear myself, panel, corner fixers,
solar cable and the MPPT Controller and got my Mr Motorhome Fixer guy to fit it all. I think he did use an existing hole to run the cables through. Satellite Dome I think. Took him two or three hours for which he charged me about £90 I think. All in was about £300. I wouldnt be without it now. Absolutely essential for us as we often spend weeks off grid in the same spot in Spring and summer. Pretty useless in winter really.