Tsayawa na gida radiator ya kira motor da shirin da tsarin duniya. Ya kamata wires, connectors, da kawai cikakken suna relays. Daga tambaya na farko ba da battery, wiring harness ya zuba daga wannan haduwa a motor fan da ya kira voltage daidai a fan. Tsarin duniya na ECU ko thermostat radiator fan yana zuba daga wannan. Wannan ya kira paramita operation na fan: kewaye za'a start, stop, ko rubuce speed. Don kira hanyar daidai da kuma rubutuwar, system tsayawa radiator fan yana sonki daidai. Kwallafin, break, ko corrosion don wani daga connectors daga wires yana taimaka tsarin duniya da kake da power signals; wannan yana barka zuwa overheat engine.