Here's an easy way to trace the trouble. Use a test light to find the constant voltage (ignition on) at the yellow wire going to wiper motor's plug. With the wiper not parked, the white/black wire should also have 12V on it.

If it does not, the inner two contacts of the cam may be burned or not making connection.

If the white/black does have power, the relay or the stalk switch contacts may have been damaged by the short circuit current.
--
Art Benstein near Baltimore

A famous Viking explorer returned home from a voyage and found his name missing from the town register. His wife insisted on complaining to the local civic official who apologized profusely saying, "I must have taken Leif off my census."