1999 Mercury Sable LS 6 Cyl 3.0L
Body & Interior
tsb 14750 wipers come on with the swich in the off position how do i fix this problem
the wipers go on at random
Yep, replace the Multifunction Switch. Probability is like 90%. To get 100% you would have to do a lengthy circuit test that I can detail for you but IMHO the odds are with you on this one.