Try pulling fuse #12. If the fan still runs you may need to disconnect
the main A/C power source. There is separate wire feeding it from the
alternator. Look at the wiring nut on the back of the alternator and
trace the red wires from it. One will go across the top of the engine to
the area behind the driver's side tail light. From there it goes up into
the A/C wiring. Disconnect the battery first, then remove the nut from
the alternator B+ post, pull this wire off, put nut back making sure to
leave the other wires on the post.

Mark

Jamie Auch wrote:
> Here's some more bizarre stuff happening with my '89.  When the battery is connected, the radiator fan come on without the key on.
> I tried to pull fuse #1 and the fan still runs!  The Vanagon starter will not turn over.  Any ideas?
>
> Jamie Auch
>