In a message dated 98-05-19 14:28:11 EDT, smitht@UNB.CA writes:

<<
 OK, before you do all this, take off the lower grille and unplug the
 connector from the switch.  Take a 4-6" piece of heavy wire, no I dunno how
 heavy, pipecleaner gauge OK?, solder a couple of male spade lugs on. Then
 plug into the connector.  One pin is ground, one is low, one is hi fan. Low
 fan will come on right away once you get the right combo, and you won't hurt
 anything if you miss. For high fan I _think_ I had to jumper all 3 terminals
 together at once, maybe not, can't remember now, sorry. This debugs the
 entire relay/resistor circuit, hi and low, easily.  I keep the bit of wire
 in the glovebox as back up.

 Check your sensor markings, the 95/105 mentioned above is Golf/Jetta rating,
 vanagon gets 83/95 values.  At least here in Canada, California engines may
 go hotter? >>

 With that fan switch connector dissconn ected, look at the connector so that
the small plastic thing in the middle is up. Now, out of the 3 pins, the pin
on the left is HOT, bridge with a piece of wire, that left pin with the middle
pin, now low speed fan should come on, now bridge both outer pins, high speed
should come on. If both low and high speed works now, replace the fan switch.
If it doesn't work on either speed, was that left terminal hot, if it's not,
replace the fuse. If only one speed works, check the resistor packs. Michael
M. 87 syncro.