30A ?It seems to be a bit too high for the wiper motor. " `: R) V+ W% V/ ~! D8 v% j' I5 M' \
Debris builds up in the cowl areas might interferes with the movement of the wiper arms. A sticky wiper arm will sometimes causes the fuse to blow. Try wickle the arm a bit and spray WD-40 at the base NOT THE NUT, then try again.