I don't think it is all that much. Pretty easy to measure - yank the trim off, open one side and insert an ammeter.

I SUSPECT the fuse (which varies from year to year, I found out this spring) supplies power to more than the motor, but you could measure the flow thru it while the motor is running versus when the motor is NOT running and you'd know.

In the 05 Limited, it was fuse 20 in the underhood fuse box. It's different in '04 - I cant remember which one it was, but it IS different in 04's.