radiator fan.....
 

can some one help me out by posting a diagram of how i could manualy control the radiator fan using a flip up switch. would greately appreciate it, thanks

You can't with the stock one. YOu'd need to goto Electric fans.

why would you want to do this?

On some vehicles (I see it on trucks) you can manually override the fan (those that are electrically controlled, or air controlled) to produce maximum cooling at all times.

On our factory viscous units, you can't.