i have a 1984 533i and when i turn on the windshield wipers they won't quit. replaced the relay and it seemed to work for a week or two.checked the wiring and i taped up a small bare spot and again they stayed off for a few days,then they started wiping non stop.the last thing i did was switch the wiper switch with my other 84 533 and it seems to work for a few days then the same thing. it's driving me crazy!! any other ideas might help thanks--andy