ER Only! Left fan is powered just like the factory fan, it will turn on and off automatically from the factory temperature fan sensor. The right fan gets power from the battery and you turn it on ..
TRX450ER 2006-2014 ER Only! Dual Fan Kit with Handlebar Power Switch & Sensor Version Left fan is powered just like the factory fan, it will turn on and off automatically from the factory temperature fan sensor. The right fan gets power from the battery and you turn it on and off from the handlebar power switch.