Diesel Giant has a great writeup about removeing the lock/tumbler/switch. With my key working I can still remove the lock assembly from the steering column, but do I need a whole new assembly or just the "lock cylinder" which I guess is the same thing as the "ignition tumbler". Or is it? Is that all I need to replace? Or are the the contacts in the lock assembly the problem? I haven't taken it apart yet (because it is my only transportation right now and I want to gather ALL the parts I need first) so I only have Diesel Giant's pictures to go by, which makes it somewhat difficult to visualize how it all works together.