Well I've managed to tear myself away from the Christmas food and drink long enough for a quick update...
Quick release arrived from Playskool - I'm really impressed with how solid it is, now fitted. Wheel is totally finished and working perfectly (in my study, anyway )
Took a lot of fiddly soldering and heatshrink, but pleased with the results - here's the messy side:
The transmitter fits snugly inside the black box, velcro'd to the wheel - so easy to change the battery when the indicators pack up...
Buttons are indicators (will be self cancelling), main beam (will flash once if headlights are off, or latch on if headlights are on), trigger for GPS lap timer on ETB DigiDash2.
Now I just have to build the vehicle-side control module - hopefully ready before summer
Enjoy the mince pies everyone!