Somewhat odd. My new switch had instructions in the box along with some diagrams.
Basically the following.
Lower steering wheel tilt
put the ignition switch in lock
should be a small tang sticking out of lock assembly This lines up with switch opening. If in wrong position the switch will be outside of the opening. making way out of adjustment.
I then had to loosen screws and slide the switch slightly to get the switch from sticking.
I would try to find out what brand and model of switch was put in to see if there was or is instructions available.
Bud
USAF Retired
Pace Arrow
2003 Chev Ice Road Tracker