The pump is mounted to the floor and the drain hose goes up approximately 8 inches from the pump to a 1.25" hole in the rear of the live well.
After going through the hole, the drain hose goes alongside the starboard side or the gas tank and out a thru-hull on the stern's starboard side of the boat (near the removable well on my '89).
I don't have a digital camera or I would send you a picture.
You have to figure out a way to fill it because the pump just pumps out.