[Citroënbender]

I’ve now acquired a used BA key.

My plan is simple. Free up the transponder aerial from the lock cylinder, make an extension for the earth eyelet.

For the first key I will put the clone key in the actual lock, and hold the aerial around my original’s butt - well away from the lock cylinder.

For the second key I will hold the butt of my new BA key in the transponder aerial, again away from the lock cylinder.