Wire fan to turn on immediately?

[Out_Sider]

I was wondering if there was anyway to set up the fan on my 05 trx450r to just turn on as soon as I start the quad because I don't think it has come on since I install the pro design kill switch. Because I eliminated the key switch and was wondering if anyone knew how to wire it so that it will just come on once the engine is started. thank you!

[300ex mxracer]

To wire your fan to run all the time you need to ground the sensor wire. the sensor is on the top, left side of the motor where the upper hose runs into.

depending on what kind of riding you do, your fan may not come on. Mine never came on so i removed it and never had problems. Others wire it to run all the time. btw all i ride is mx.