There are two primary ways that we advise people to add hydraulics for a grapple.
The first option is to install a diverter valve in-line with the tilt function of your loader. In the drawing below, ports P1/P2 are connected to your loader valve’s tilt function. Then, the grapple is connect to the auxiliary circuit using ports A&B. Finally, the tilt cylinder is connected to the primary circuit using ports C&D. When the switch is inactive, fluid flows through the valve (In P1/P2 & C/D ports), allowing you to operate the tilt cylinder as normal. When the switch for the diverter is activated, fluid will be diverted to the grapple (in P1/P2 & A/B ports), allowing you to open and close your grapple by moving the joystick for your loader left and right. When the switch is deactivated, fluid will revert back to the tilt.
Your second option is to install a third function kit via the power beyond port on your loader valve. This allows you to use your grapple without having to divert fluid away from your tilt function. Our third function kits include a joystick-switch operated control valve, which will allow you to control one double-acting cylinder for your grapple. See the drawing below for how an example installation.