i have a vw #99 relay. this is the optional programmable adjustable
intermittant wiper relay. its a factory vw part.   it allows you to  custom set
the wiper interval sweeps of your intermittant windshield wipers. all  you do
it take your #19 relay out and plug this one in, and set the sweep times  by
pulling back on your wiper stalk.

fits all vanagons.   $25 shipped conus
pmail me  if interested