You have to cut the small feed line from the pump and put compression adapters on. You use an open center control valve. You run the feed through the control valve for the loader and back to the 3 point line going to the rear. Some control valves have three lines. You can tee the return back into the line to the rear or I have seen them ran back to a fitting on top of the transmission. The lines from the pump are 10mm. You have to get adapters and use 10mm ferrels. I get mine from a NAPA store in Murray KY.