Hymer Sunlight Van 1 purchase

Wohtex. If you don,t belong to the carado//sunlight owners group I recommend you also join. I am creating my own go to manual from the helpful information they have. There is a good article in the files section titled “the only power document you need”. It covers problems with the battery system.
Question for you. How do you handle the drain line from the sink. I am told mine drains to the ground