Progress today.
The ignition switch was a massive hedfuk. It had the fairly common E36 problem where the key will spin without switching the ignition at all.
YouTube says that it is a ten minute fix, so I strode in confidently.
But no.
Someone had previously messed with it and filled it all with swarf, and that swarf jammed the lock. And my fiddling made it worse.
And the jammed key barrel could not be removed from the housing.
Looonng story short, I cut away the the housing to release the key barrel, and then used an aluminium tube to turn the electrical switch (plus bushes etc).
Flattened the tube on the key end so that the original key turns it.
Original immobiliser antenna put back in place.
Sounds like nothing, but was actually hours of churning ideas through my head, particularly aware of the possibility of bricking the car if I didn’t keep the key and immobiliser happy.
Tomorrow morning is sorting out the droop travel on the front suspension, maybe finishing the polishing and putting it on the trailer for the shakedown on Thursday.
Tomorrow afternoon is appointment with the surgeon to work out what’s happening with the ACL and when I am allowed on a dirt bike again.