You need to go back to your dealer and ask for a copy of the loader installation instructions relative to your loader which will include the plumbing and electrical for a third function.
I will attached the instructions for a LA534 loader to show you what dealers have. These are not automatically provided.
If you have no loader, what are you going to do with the third function? Do you, instead, have a rear remote kit and just used the wrong lingo? The 3rd function would mount to the right side loader upright normally.
If you have no loader, what are you going to do with the third function? Do you, instead, have a rear remote kit and just used the wrong lingo? The 3rd function would mount to the right side loader upright normally.
That should have come with instructions. Call your dealer. Its not simple if its like the somewhat newer MX4800 I have. The valve attaches to the right side of the 3pt hitch under the seat. The ports, obviously in the back somewhere. I went and rolled my own due to the cost of the OEM kit.