Re: Unplugging 68 ignition switch
Put the key into the ignition switch and turn it to the acc position. Then take a small piece of wire and stick into the tiny hole to release the key tumblers. Once you have the key tumbler out you can unscrew the bezel and remove the switch. Depending on if your harness it routed correctly and not all tangled up you should be able to pull the switch down far enough to remove it from the harness. There are 3 tabs you will need to press inward to release the harness from the switch.
I hope this helps & good luck..