97 Explorer Turn Signal Problem

The windshield wipers on my 97 Explorer XLT would only work with the
stalk pushed to the high beam position, all the way forward (toward engine).
I took out the switch today and found a disconnected wire on a 4 point
connector with three wires connected to it. I soldered the wire back in
and polished the contacts and coated them with dielectric grease.
When I reconnected the switch, everything seemed OK (the wipers work in
the normal mode).
Tonight I drove the truck and now the turn signals will not disengage.
Everything seemed to fit fine when I reconnected the multifunction switch.
Any ideas of what I need to look for? It seems like something should
engage or disengage when the steering wheel is returned after a turn. A
new multifunction switch is approximately $70 at the dealers.

Thanks in advance,
Ron
Munroe Falls, Ohio