I made my own shower system with an inexpensive pump and shower hose from Amazon, . I have a black 5 gallon water can that heats up nicely in the summer sun, especially if left in the BS. I can heat water on the stove and pour it into the water can if it isn't hot enough. That way, I don't have to have it hooked to the vehicle, and it doesn't have to be up high. I use a Lithium battery for my tent lights, and it powers the pump if I don't want to shower next to the BS.