I'd be looking at the other set of tracks for the TCU gear-specific signals then, based on my understanding of how the F125 works. I can't see them in your photo, or all the contacts.
(I think I worked out the likely logic and posted it not long ago) Edit, here: http://forum.a8parts.co.uk/showpost....98&postcount=8
Interesting. I will have a look at the other side in a bit