Dismantled dashboard to replace knackered bulb on speedo side of binnacle - got covered in thedried out foam stuff thats been in since new. Filed out a small piece of plastic in the switch blank area of the dashboard to accomodate a VX switch for my roof spots. Established the switch I have acquired is "press in" to turn the component off and with the switch in its outer (normally off) position the component becomes live

So now writing a wiring diagram to have the switch look "normal" whilst controlled by a concealed master switch. Drilled out a heated seat switch blank to accomodate the "roof lights on" tell-tale LED. All good fun.
Mrs has this evening announced kids want to go exploring at the weekend (possibly from Friday) so I've got the next two days to put it all back together again, and do the oil change and pressure wash underneath and apply the waxoyl
