What is wrong with my wiper switch? on 1998 Volkswagen Golf

The wiper switch refuses to turn off the wipers! The mechanic has tried replacing the switch and the switch motor with no luck.

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2 answers
if, IF, IF it aint the switch and it aint the motor, it has got to be a shorted wire between the two!
THAT'S ALL THAT'S LEFT!!
agree with pushrod,also poss wiper relay is stuck on