It's easy but expensive. Your wiper problem may be in the relay which is located in the motor.

You can check out the contacts in the switch by very carefully removing the pin that holds the sliding part of the switch on. It runs vertically.

If you look at the big connector that the wires from the switch runs to, I believe that power comes in on pin 11 and then 12, 13, or 14 get power depending on the wiper speed. You can also check at the pins on the wiper motor.

I will take a look at the Dremel repair but the newer switch is a much better design, and it would be nice to use it.

__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe