Glad to see you decided to order yourself a controller.

 

I have an extra controller wired up in a radio shack box I'll let go for $16 shipped if anyone wants it. Includes the probe.

 

I have a 3 position switch on mine, normal thermostat controlled on low speed in one position, off in center and high speed ON in 3rd position. Mainly because sometimes offroad the truck was getting a lil warm on steep climbs so I can flip to a high speed. I agree that the fan makes a mess in mud, my engine compartment got sprayed with mud!!!