Just so you know, there are three ways to go on this. Rear remotes, as described, third function, and diverter valve.
Third function uses a three-way solenoid valve under the deck that's plumbed into the power-beyond flow between the loader valve and the 3-point hydraulics. A three position (down-center-up) rocker switch on the joystick switches the flow to the loader ports.
The diverter valve mounts on the loader and switches the curl flow between regular curl and the loader ports. A push button on the joystick engages the diverter to make this switch.
In theory the third function lets you lift, curl, and operate the grapple simultaneously. In reality, it's hard to lift and curl simultaneously with the Kioti loader valve. Also, this setup doesn't allow modulating flow to the loader ports; it's max or off.
The diverter lets you modulate flow to the loader ports but not simultaneous with curl but the motion is not as natural as the rocker switch.