How to connect your electric hookup and fill the water tank in a CamperKing campervan conversion In this video guide, we show you how to connect a hookup cable from a site facility to your campervan, and how to fill up your onboard water tank. Campervan servicing From our HQ in Warmington, Warwickshire, we offer a range of service options. If your campervan requires servicing, book online today.