This post is sort of null & void at this point.  I have since replaced my driver & passenger door locks with complete new units but there is still knowledge to be passed in this post and maybe it will help someone else out there in MGC-Land.

After purchasing my MGC at auction I soon realized that I did not have a working key for the passenger door.  The car came with 4 keys including one which started the car, one that opened the glove box and one that opened the drivers door and boot lid (trunk) and a seemingly useless 4th key that did not open/operate anything in/on the vehicle.  The passenger door was a mystery, none of the keys would open/lock this door although some of them would fit in the lock.

This post will show you how to modify the lock assembly of a door so that any key of your choice (that physically fits in the lock) will open/lock the door.

This procedure is a bit “sketchy” in that

1: I am tampering with the locking mechanism and making it work with the key that it is not intended to work with.

2: I am modifying the lock in such a way that there may be 1, 2 or several keys out there that operate this lock now, hence making the car less secure.

3: I actually show in the video what the pins/tumbler looks like and what pins I modified to make this work and so it wouldn’t be difficult for a would-be thief to manufacture a dummy key that would work in my lock since they now know what pins to target.

This is precisely why I have since purchased and installed a new set of locks with new keys, however I’m not sure any would-be thief would go through to trouble to manufacture a key based off my video when they could easily bust out a window and achieve the same result.

I decided to go ahead and post this video since I think there is still potential benefit for someone out there who might be curious how the lock assembly works or who needs to know how to take the door panels apart.  So, enjoy!