I installed the WR Long 3rd function kit from
EA onto my Kubota
B3300. I have no expertise in hydraulics or electrical and it took me a lot longer to figure out than a pro, but I got it done. Part of my challenge was figuring out the plumbing given I have a backhoe. I had to go to a hydraulic supply store and they reworked a fitting and hose for me. For the electrical, some research showed I could either tap into an existing hot line or add something into the fuse panel. Given the kit comes with a line fuse, I used trial and error to find a hot wire, bought a soldering gun, youtubed videos on how to solder, then went to work. It was actually quite simple now that it's done.
I was going to have the dealer do it for about 90 minutes of labor, which is relatively inexpensive, but I had to get the tractor there, etc etc. I wasn't in a rush so I opted to learn how to do it myself.
Worked perfectly right from the start and if I can do it, anyone can. Good luck