[KetilParow]

I confirmed that the tail compartment and engine bay lights work.
The smoke from the steering column has gone away. The car hasn't been much used over the last years, and I suspect there had been a buildup of dust in there. Seems fine now.

Speedo- and tacho- meter readings are still way off however.

In general, it seems there are some electrical quirks in the car. Recently the coupe lights have begun turning themselves on while I'm driving (!).

Lights for some of the switches (window elevators) also seem to have a will of their own, sort of like that old joke, "your turn signal works - doesn't work - works - doesn't work - works...".