Newbie here.
I have a 92 cherokee laredo 4L , with tilt , cruise, etc.
The turn signal won't go off after a left turn.
Is it the switch thats faulty, or is there something that actuates the switch thats broken? Any links, etc to the right parts would be greatly appreciated.

It's the switch. The plastic on the switch tends to get brittle after 21 years. You'll need a steering wheel puller, a lock plate depressor, a Philips screwdriver, a 13/16 socket and ratchet with an extension, and a coat hanger to fish the wiring down the column. You're also going to need a pick, or a small blade screw driver to get the lock plate clip put of the groove.