To elaborate on the MFS, and the different ways it can be f*cked up:
1. Buzzing noise when trying to signal a turn.(Mine did this)
2. Smoke escaping from the switch. (Didn't see this)
3. Strange effects from the intermittent wipers, like skipping cycles or performing two cycles in a row, then going back to the normal pattern. (Mine also did this)
4. Loss of low beam headlight on one side or the other (Mine didn't do this, but others have had this problem)
5. Loss of brake light on one side or the other (I remember this happened to Rick)
There may be others as well. Several circuits are routed thru the switch, and they seem to have a high rate of failure.