power supply for thermo fan

Hi all,
I've mounted a 12v thermo fan to my 07 TE450 and I'm now looking to wire it up. I've purchased a thermo switch that will be glued to the radiator, 90c cut in and 75c cut off, my question here is where should I get the power supply from??? could I just wire straight to the battery?? should I put a fuse and what amp fuse should I use???

any ideas??

thanks joker

I would just go straight to the battery, use a fused link with a 5 amp fuse.

thanks sharpie1, I'm hoping to get it all working this weekend for a ride on Monday.
joker