Depending on how the internals of the switch are, i might be wrong with how i put the switch. It looks like a 3 pin switch.

Here is a good thing: last diagram on the page. http://www.bcae1.com/switches.htm

So top to bottom(or may have to reverse it depending where the LED is:
1. GND
2. Output to pin 85
3. Input 12v+ from ignition

Again, i suck at explaining things, i make mistakes..but this should work with the components you got there.

 

What i came across is that the sensor, once it heats up to 230'F, grounds. The plug that connects to the sensor just needs to be grounded in order for the fan to turn on. I take the +12V from the fan connector, which is only +12 when ignition is turned on, and attach that to my switch LOAD.

I will also set it up the way you suggested as well, couldn't hurt Thanks again. As soon as I make a switch mounting bracket I'll install all of it and in detail.

 

Just wire your fan so it's on constant... that's what I always did with my stuntbikes. And use Engine Ice!!!