The easiest way to by-pass the ignition tumbler is to unbolt the actual ignition switch located on top of the steering column under the dash. Its a rectangular metal box with two small bolts holding it on the tube. Once removed you will be able to slide the switch manually through all the positions with a screwdriver or similar tool and you didn't have to tear apart the dash! Pay attention to how the ignition rod fits in it so you can put it back together properly when its fixed.