Replace that tired looking, non functioning Cruise Control switch in less than 15 minutes using a few tools and piece of mechanics wire.
First remove the drivers side hush panel and lower steering column cover and locate the three (82-83) or four (84-88) pin cruise switch connector.
Unplug the connector and you will notice a small 1/16 hole on the flat. Route a piece of mechanics wire, (about three feet) through the hole and twist.
Now, grab hold of the cruise switch and pull it straight out of its socket.
Next, pull the switch wiring though the column guiding the mechanics wire along with it.
Once you have the mechanics wire all the way through the column, cut or untwist the wire and connect to the new switch in the same fashion as before.
You may now pull the mechanics wire back down through the column while guiding the new switch wiring down with it.
Viola! You now have a slick new Cruise switch to complete your restoration or to just get the cruise working again.