Left fan plugs into the factory harness and turns on and off automatically from the factory fan temperature sensor. Right fan is wired directly to the battery and
YFZ450R EFI 2009-2013 Dual Fan Kit with InLine Coolant Line Fan Temp Sensor. Left fan plugs into the factory harness and turns on and off automatically from the factory fan temperature sensor. Right fan is wired directly to the battery and will turn on and off automatically using our InLine Coolant Line fan temperature sensor. 176 degree sensor.