914-4 Ignition Switch Replacement -How to?, anybody have pics and/or proceedures? Options

[914rrr]

I have a suspect ignition switch in my teener. Haynes manual exploded view is so small it's worthless. Clymer only has proceedure for 914-6. Anybody have a good resolution exploded view of the steering column components and / or a step by step? Is the key/mechanical portion still available? I know the electrical switch still is. Does having AC complicate things?

[914rrr]

Thanks Doc, and all. Horn pad came of by simply tugging on it (very lightly at that). BTW, you don't have to remove the under dash AC unit to get the lower dash piece off. WHEW!

Had documentation that the ignition switch had been replaced and a visual under the dash confirmed this. By moving the multi-pin electrical connector (MPEC) around just slightly, I could get the switch to start the car. So I thought that maybe the connectors in the MPEC were loose. Pulled them out one by one and tightened them all up. Still acting up, won't start with the key. Bought a NOS switch and plugged it onto the MPEC (outside of the mechanical part), and it works like a charm. Pulled out the original switch and connected it to the MPEC (outside of the mechanical part), it works fine also. Hmmm (IMG:style_emoticons/default/idea.gif)

Installed NOS switch in lock assembly, it won't start the car unless you wiggle the MPEC around, just like the original one. Looks like the mechanical portion of the switch is somehow worn out. Key and tumblers seem to work OK, but center part that turns the electrical portion seems loose/sloppy.

Now the question is... how do you replace the mechanical portion of the switch? Or, is there some way to shim it, machine it, etc? I think I read somewhere that a VW mechanism is similar, just the tumblers are different. I also heard that the only way Porsche sells the mechanical portion is with a new (different) key. Any experience with this, threads with pics, etc?

Thanks!
Rob