I got this picture from eBay.
The red arrow is the ignition switch.
In this case ('86 Caravan column), anything
detachable from the green line up is interchangeable with your steering column (all '80-90 Chrysler vehicles, except for Omni/Horizon or pickups – with minor differences on electrical items between the years and major differences if w/tilt or without tilt steering). That said, the firewall mounting, tube lengths, shaft lengths and dash mountings - FM bodies are different from all other bodies (and dash mounting is different between J body and FM-bodies).
All of the other items (switches, locks, steering wheels, bearings, levers, shifter arm, housings, tubs and covers are all the same (again, except between tilt and non-tilt columns). For what ever reason, Chrysler changed the electrical connectors every other year (or so) just to make the switches non-interchangeable (unless you also changed the connector(s).
BudW