Indispensable in extreme conditions, this fan ensures more air, better cooling and maximum performance. It's in your own hands: The digital control allows you to adjust the switch-on temperature to the present conditions and to read off the current temperature at any time. The freely selectable switch-on temperature is between 65 °C (149 °F) and 95 °C (203 °F).The switch-off temperature is adjusted automatically and is always 1 °C (34 °F) below the selected switch-on temperature. Auxiliary wiring harness 777.11.979.000 is required for installation on EXC 4-stroke models (up to and including model year 2011) and on all EXC 2-stroke models. As of model year 2014, Y-distributor 777.11.979.010 is required for installation on EXC 4-stroke models. Auxiliary wiring harness 777.11.979.000 is required for installation on XC models.