>
> On my '84 Westy the wiper blades move only at a slow speed on either =
> high or low settings. Would this be the problem of an aged wiper motor =
> or relay switch or other cause? Any experience with this problem? =
> Thanks.
>
If the motor goes then the relay is not going to be your problem.  It's
possible that you have really bad connections somewhere in the system.
If they check out OK, then yeah, your motor probably just needs some
lubrication.  I had to do this on my Karmann Ghia recently.  I removed
the motor and took it apart, cleaning up the old dried grease and
reassembling with what's called marine grease (found it at a FLAPS).  I
had also been recommended distributor cam lube but was unable to find
it.

Your problem will lie in the linkage or motor or both.  I took apart the
linkage after removing the motor from the frame and carefully paid
attention to how everything went together, and greased all bushings.

Then I took the motor completely apart and inspected it.  Not finding a
burned armature or worn brushes, I cleaned up the old grease and put it
all back together with marine grease.

Teh grease you want to be thick enough not to run but not so thick that
it slows the wipers down in the cold weather.  Marine grease is just
about th eright consistency for that.

Good luck!

--
Sean Bartnik
Fredericksburg, Virginia
1981 Volkswagen Vanagon L Westfalia
1974 Volkswagen Karmann Ghia convertible
http://www.type2.com/bartnik/myvan.htm