If you use the voltage reducer that Tim shows above , just remember they get extremely hot and need to be mounted in a safe place.
I would go with the 12 v blower motor like mark suggested.

Tim

1951 3100 Chevrolet
1951 Chevrolet Suburban Carryall
Image
"A house is built with boards and beams. A home is built with love and dreams."
"Look deep before you leap !!!" / "Everything is Everything"
"If I say a mouse can pull a house, hitch him up"