try cleaning the switch. might have a dirty contact, just be sure to wipe off the excess cleaner quickly as it will dry the plastic. just pop the switch covers off, flood it with contact cleaner while exercising the switch.
Project Smoker, '87 603 powered wagon
Hauler, 96 CTD can you say torque?
Toy 73 Cougar xr7 convertible
Acme Automotive Inc.