yet another DC Controls question

[cad]

I've got the yellow wire hooked up to 12v on mine.
It only runs a minute after the key is off. I planned to leave it that way. I think it will be fine and it will prevent a little bit of what some refer to as "heat soak" on a hot day after you shut it off.
And, btw, it makes a very strange, yet cool, whine noise while it winds down....