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Cat 246 hydraulic malfunction on skidsteer

I have a highflow cat 246 skidsteer serial 00246J55204096..   The accessory hydraulics do not work when hooked into a grapple bucket..  I have power going to the auxiliary buttons on the joy stick and  power leaving the joy stick and the buttons work. After that the wires go into a big wiring harness and it's difficult to see where they go. The solinoids are not getting power. I checked fuses and all those were good.  Am I missing some trick with the highflow rocker on the upper right hand overhead panel?  Should I click that and then try toggles or what?