I can't access 1993 manuals online, I can try to look for the old books on monday but 1993 model year books are spotty many techs over the years have taken them and never returned them
What I would do is try another relay.. then you need to remove the steering column cover and check all the wiring int he column.. pay close attention to the pin fit on the multifuntion switch as I have seen the wires pull out of the connectors there.
then trace the wiring and wiggle it while checking for operation..