Curt
Determine where your WH is located on the outside of your camper...Measure from a point on the outside you can reference on the inside of your camper...Now you need to investigate...Your WH will be hidden behind a panel that you will need to remove to access the valves to allow water into your WH...This panel will already have screws inserted that will hold the panel in place and so it can be replaced when you have finished with the WH...Hope this helps...Good luck...
Also let me say if you put some information in a signature such as the model of your Zinger, and tow vehicle some of the members of this forum will be able to give specifics to questions you may have...