To narrow it down a little you can try unplugging the connector that goes up the steering to the switch and see if it still blows the fuse.
It would help to see if the problem is on the power or load side of the switch.
I do not have access to wire diagrams of this particular year, so I'm unsure of relays. Does sound like a short though.
Also check for good ground at the wiper motor. I know it sounds weird, but sometimes a bad ground can cause a kind of "loopback" effect blowing fuses (firsthand experience with my old Jeep).
Good luck!
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Monday, July 2nd, 2007 AT 8:49 AM