Draining water lines

Problem solved... Got down on hands and knees looking for low point water drains, nothing to be seen. I figured they had to be somewhere so laid on my back and slithered underneath the MH. Looking up at the bottom of the chassis i saw the two drains holes,the tubes had been cut off flush with the frame. Looking back behind the panel and underneath the all the wiring and water lines there I found the shut off valves.

Thanks to all for your replies