30A ?It seems to be a bit too high for the wiper motor.5 z/ q% \ q1 r9 R. p0 U
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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.