I found this today. I figured it was dried out after years of sitting but when I plugged it into the vacuum hose on my 3A if woke right up. Pretty neat little fan. I'm told my 3A had a similar one back around the time it was new. The fan was mounted to the steering column and helped defrost the windshield when the half cab was installed. Cool gadget.
[media]https://youtu.be/lplXAZJ5uLE[/media]