Just finished putting together my third function hydraulics for my grapple bucket. Using the rear SCV to run it. Used garden hose to figure out lengths for hoses. Local NAPA made them for me. Both rears have a 90 degree to a male ag fitting. At the side of the tractor where the loader hydraulics can be disconnected to remove it, I used a male and female ag fittings so I can split the third function off as well. The thing I haven’t seen anyone else do when they use the rear SCV is to take advantage of the routing of the lines through the loader frame (520M). There were 4 running through already and it had room in the clamping bracket for two more. Made it look much cleaner than zip tying the lines to the frame. Had to remove the plastic shrouds on the loader crossbrace to access the pass-through but wasn’t too difficult. I bought a piece of aluminum angle, painted it, and drilled holes to mate it to the existing bracket on the loader. Had some struggles finding the exact bulkhead fittings I wanted and had to buy them with the hydraulic fittings on them from Summit. I opted to go with skidsteer style because that’s what’s already on my grapple. Everything is NPT except the fittings on the loader. Had to get JIC skidsteer fittings with JIC bulkhead from Summit then got a 90 degree JIC to NPT from OneHydraulics. Got all the ag fittings from Summit as well. Used Loctite 545 on all the fittings. True test will be in a couple days when I attach everything and pressurize it. This is my first foray into hydraulics. Crossing my fingers for no leaks!