This wiring harness connects the joystick control assembly to the electrical system of the loader. It transmits operator commands from the joystick to the solenoid valves that control hydraulic functions. A damaged harness causes intermittent or lost control signals, leading to unresponsive or erratic implement movement. The original harness uses connectors and wire gauges that match the pin layout of the joystick and the machine-side receptacle, preserving signal integrity without splicing or adapter pins.