2009 Polaris Outlaw 450/525 Service Manual, Page 171Get this manual
ELECTRICAL Fan Switch "Hot Light" Operation
With the ignition switch and engine stop switch in the "On" position, power is delivered to the indicator panel "Hot Light" via the RedWhite wireThe BlueWhite wire (ground) at the indicator panel is connected to the fan switch located on the radiatorIn normal operating conditions, the "Hot Light" circuit of the fan switch is nonconductive (open)If engine coolant reaches the specified temperature, the switch becomes conductive completing the ground path for the lightCurrent Draw Inspection Key Off
Battery
Charging System "Break Even" Test