I have a clear (very small) line leaving a pump located under the machine and entering the rear panel..I assume this is the rinse line. Is this line completly internal or is there another line that needs to be connected to the same pump to for an external dtergent/rinse solution? I have the smae condition with a slightly bigger red tube and then an even larger clear tube. I am also looking for a plumbing schematic to make sure the tubes are all in the right location.