This electrical relay controls the switching of higher-current circuits within the grain harvester's electrical system. It acts as an intermediary between the operator controls and the load, allowing a low-current signal to energize components such as motors, solenoids, or lights. A failed relay typically results in a complete loss of function for the circuit it serves, with no intermittent operation. The original relay matches the coil resistance and contact rating required by the host machine's wiring harness, ensuring consistent switching behavior without voltage drop.