I have written up a detailed "how to" on this subject here:
http://www.vanagain.com/How2fan.htm

Enjoy!  I have any parts you might discover you need.

Thanks,
Ken Wilford
John 3:16
www.vanagain.com

-------------- Original message --------------
From: Troy <colorworks@GCI.NET>

> Hi folks:
>
> My 89 has gotten up to 2/3 hot on the gauge, but I have never ever heard the
> front radiator fan kick on. I'm wondering if the fan even works. How do I go
> about testing it? What is normal behavior for the radiator fan?
>
> Troy