In the garage of my rapido is a cover with a picture of a solar panel on it. Removing this cover reveals 4 cables 2 blue and 2 red I assume this is pre wireing for solar panel. Where do these cables go? cannot find any unused cables in any cupboards etc and both sets of leads are dead. I thought maybe one set would go to leisure battery and the other coiled up somewhere to go through roof to panel. I may give up on idea as cannot find a accessable route through van for new cables. any ideas please?