[CADreamin]

The ignition switch itself is a very easy job. Once you get the new one, you simply place the key inside the lock cylinder. There is a small button on the steering column underneath where the key sits. Press this in with some sort of small blunt object, line the tab near this button with the slot on the lock cylinder, and slide the key/lock cylinder assembly into place. Release the button and check for proper operation of the key in all positions. There are no wires to hook up - the contacts on the end of the lock cylinder touch the contacts inside the steering column and carry electrical current.

Before doing this however, if you are restoring the car to a complete state, you need to do two things. First you need to buy the upper and lower steering column shrouds. If you get them after replacing the ignition switch, you will need to pull the key and lock cylinder out and do the process over again. Second, that black ring hanging from wires in your picture clips to the steering column where the lock cylinder goes. But, from the picture, the part it clips to on the column looks like its broken. You may need to have the column repaired or replaced...not sure.

Don't know what other models you can source parts from...sorry but I hope this is helpful.