This is a Text Only newsgroup, your post can screw up the news reader of some of the group members.
Look at the Master Cylinder. There is a wire from the factory harness that plugs into the snout of the MC.
If this wire is plugged into a newly added wire, then you have the recall part already installed. The recall part can be removed by unplugging it from the master cylinder, then unplugging the main harness from the recall part and plugging the main harness directly into the master cylinder. If you can unplug the harness from the MC, then unplug the other end and plug THAT wire directly to the MC, then you just removed the recall part. If you unplug the wire from the MC, and there is nothing more to be unplugged in the immediate area on the same wire, then you have not got the recall part installed yet.
Chuck