I use quick connects on the snow plow and just use a male on one cylinder and a female on the other, that way when its disconnected, the fittings/hoses plug into each other keeping crap/dirt out. I dont have a schematic as I just built it as I went. Its pretty simple. from left to right, omitting the 4 lines in the side of the joy stick valve, pressure/supply line from the pump flows through, and suppling the joystick valve, then to the single acting dump valve. The line under the supply line to the dump valve is the return/tank for the joy stick valve. the dump bed valve has the supply in, then the return to tank. the line on the side goes to the dump ram and is single acting....pressure up, and gravity down. the 4 lines on the joy stick goes to 3 cylinders on the plow, one DA and 2 single acting. The line going out of the joy valve to the dump valve has a "power beyond" fitting in it, to provide pressure beyond the valve, instead of returning to the tank. This is the best explanation I can give. If you go to Surplus Center's website, there is tones of info, parts and each valve, pump, or cylinder, has a full spec and explanation, Plus questions and answers about it. they also answer questions within a few days, or you can call them..800-488-3407