The control for the grapple is 3rd SCV lever( to the left of the 3pt hitch lever). The hydraulic lines are hooked up in the back and run to the front of the loader. Whenever I get a grapple, I will look at what it takes to get another joystick that has a button for the grapple. Then I could control the loader and the grapple with one hand and joystick. For now, the 3rd SCV lever will have to do.