I also live in soggy Seattle and drive a '74. My heating system is in pretty 
good shape and once the engine gets good and warm, it will defrost if I'm 
cruising. But not during city driving or sitting in a traffic jam. So, I 
usually carry a towel or two.

-Mark McCulley

>Thanks for the tip.  It isn't really the heat I have a problem with, 
>since it doesn't get below 35-40 too much here, but the defrost.  In the 
>rain my windshield is a foggy mess.  I have a little fan attached to the 
>dash, but it blows cold air on me as well.  Plus, it does nothing to melt 
>the ice that occasionally forms on the windows.  Scraping removes it, but 
>as I drive it reforms.  The heat gets to the interior ok, but without 
>enough force to do much good.  It ends up fogging the windshield worse 
>than if the heat were off.
>
>Craig
>
>