Totally agree with AndyR it is usually the cause but also check the wiring is not poor connection (wiggle the lead going to the motor and resistor pack when fan switched on)
An airbag light should extinguish once the repair has been carried out as it looks at the system resistances each time the ignition is cycled.
You should be able to get away with the clock spring if it physically fits as the resistance should be within similar spec to the original one
Great collection of cars and some I haven't seen in years like the Metropolitan
I guess the weather had to break eventually as you'd had a good run up to now
Hi...welcome to the Club
It would not only require the hardware (wheel, switches, etc) but also need coding into the Body Control Module (BCM) for it to operate and that would require dealer level diagnostic equipment to carry this out