To add to the last post, first insert the ignition key and turn to the #2 position. Doing this allows the slots in the tumbler to line up with the spring loaded locking pawls that keep the lock assembly in place. To remove the lock assembly, you must fashion a tool that will force the detents to retract, thus allowing you to pull the assembly out. The tool can be easilly made from coat hanger wire. Bend the wire into a "U" shape. Make each leg of the "U" about 6 to 8 inches long. The bottom of the "U" should be about as wide as the slots in your ignition lock. My guess would be 3/4 - 1". This does not need to be exact. Once fashioned, you will need to file or grind a 45 degree champher on the INSIDE of both legs. This champher permits the wire to slip behind the locking pawls. Once the tool is done, you may have to remove the decorative ring around the ignition lock. This ring is usually a pop over fit. Be careful prying it off so as to not mar it. Once the ring is removed, slip the legs of the tool into the two slots that are spaced 180 degrees from one another. You may need to exert a little force, but you will feel it as the tool pushs past the locking pawls. Once this occurs, while holding the tool in place, grab the ignition key and pull the tumbler out. Sorry for the long post, but this is really a pretty simple job.