A cheap 12 volt shower quickly converts to a water pump for filling your onboard tanks. Just disconnect the shower head, drop the filter end in the bucket of water and plug the unit into a power source. There is an on off switch on the power cord. Our van only has a 12 volt plug on the opposite side to the tanks. We find that the easiest way is to back the car up to the van’s water intake and use the 12 volt plug located in the back of the car.

  
Quick and easy to fill and no more wet T shirts.