You sure didn't waste any time!
Be sure to wire it up properly. You can see the layout in my pics.
If you get the two large leads backwards it will smoke the wires without the fan running.
It does have a capacitor so expect a wee tiny spark when you disconnect/reconnect the battery. That's normal and won't hurt anything.

If you can put your radiator on a bench and fit the fan to it you'll have an easier time.