Cooling fan hookup?

[sluggie24]

I would like to install a cooling fan on my 9920 controller when I build my truck just to make sure it wont overheat. I have a micro fan made to go on a 540 motor heatsink that seems to have a very low current draw.(although I haven't measured it yet) My question is what would be the best way to hook it up? I was thinking I could tie it into the output line of the Kool Flight BEC I will be running.Would this work without causing any problems for the reciever? If this will cause problems is there a better way to tie it in to a voltage source?