bought my 05 raptor nov 08.. also didnt notice it had a fan till i took it all apart to do some cleaning... NEVER heard it come on and i noticed it ran pretty hot... maybe the cooling system in them is sufficient enough but i decided to add the toggle switch to it to cool it when i wanted to... better safe than sorry i guess... worked great for me ... can post pics of mounting if anyone wants to see it... just let me know
ALSO... DO NOT FORGET to add the 'in-line' fuse to the new wiring ... dont want wiring to fail and set that RAPPY on fire!!!