Welcome to TBN Kenny...
Do you have a rear aux. remote or the PowerBeyond loop for a backhoe?
If the answer is NO to both, then the cheapest way is to disconnect the curl function for your loader, and have hoses that go from these ports to the splitter. You will have to bungee the joystick to the left or right to keep the fluid flowing through the splitter valve.
A local hydraulic shop, some tractor dealers, and some NAPA stores will make hoses for you.