Other people have answered the question of what's wrong.  I just wanted to
point out that, although your situation is certainly not normal, some short
running with the key out does not indicate a problem.  So, when you have
your relay or switch replaced, don't think its still broke if the fan
sometimes is on a bit with the key off.

On Mon, Oct 1, 2012 at 4:08 PM, Jamie Auch <jamie@kookymathteacher.com>wrote:

> An interesting thing happen today. My wife was using the '89 Westy and she
> called and said the fan was still running with the Westy turned off. I did
> not think much of it until I got home and the fan was running three hours
> later. I should say barely running because the battery was almost dead.
> What would cause this? I can keep the fan off by either unplugging the
> switch under the grille or pulling #1 fuse correct? Can anyone tell me what
> might have happened?
>
> Jamie Auch
> jamie@kookymathteacher.com
>