Ignition switch (not barrel) replacement
Here is a link on how to remove your ignition switch and replace the electrical part.
http://www.jeepforum.com/forum/f67/e...codes-1291281/
Part Number
04685719AI
The CRD has an extra terminal on the switch and this will cost you an extra $200 or you can do the conversion below.
Internally they are identical accept for the top cover that houses the extra contacts.
I just removed the top cover & fitted it to the new switch, watch out for the spring loaded ball bearing, it may pop out but its not that hard to refit.