Agree hydraulic hook up for tractor final, sorry
You may look in the back of the tractor and see a rear hydraulic outlet and assume that they're all the same, and really that couldn't be further from the truth. There's a lot of different styles of valves and how they work mechanically, and a lot of different hydraulic systems that are pumping the oil through these valves. Some of these differences can be really important, depending on the types of implements that you're choosing to put behind your tractor. So first, in the mechanical sense, there's a lot of different ways that these valves can work. The cheapest and least expensive valve is called a spring center valve, where you'll have a simple lever and when you press it forward or back and let go of it, it pops right back to the center position.