Found a pic on the web, longish URL

http://www.partsgeek.com/catalog/1990/volkswagen/vanagon/
cooling_system/auxiliary_fan_assembly.html

see the hose barbs? And this is listed for 1990 vanagon rwd.

Alistair

On 19-Aug-09, at 9:20 PM, Kim Brennan wrote:

I can't speak to the hoses. The electrical connection is for the front
differential lock sensor. In one of the few cases of VW, not
customizing wiring harnesses, all Syncros have the connectors for the
differential locks, front and rear, and the decoupler sensor.

Or maybe it was Steyr Puch not cost cutting.

On Aug 19, 2009, at 6:02 PM, Alistair Bell wrote:

> hi,
>
> crawling under my '86 syncro (part of the loosen the front transaxle
> mounting bolts in prop shaft vibe procedure), I had a look at rad fan
> and noticed something I have never seen before. The fan motor has two
> hose connections (approx 3/4 dia) coaxial to fan shaft, on end of fan.
>
> Anyone know what they are used for?
>
> Also, above front transaxle, strapped to underside of van, is a
> rubber booted 2 prong electrical connection, not connected to
> anything. Any ideas?
>
>
> thanks,
>
> Alistair