The same thing just happened to me with my '05. I have an appointment with the Ford dealer Monday morning. Mine is covered by the after-market warranty I bought along with the car. The first $100.00 is mine, but the rest will be covered.

I wonder if I should just do this myself if it's only the switch.

Any way, if you had the owners manual you could see where the fuse for the wipers is and take it out. That's what I had to do.
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2005 Stock Crown Vic LX
Dual exhaust with X-pipe
C.B.
1984 Chevy Blazer