Muchos thanks to you both Rog and dejay!
I presume the latching switches will cancel if you switch off the electric's/engine ie. self cancelling if power is lost?
I'll start sorting all the parts and getting ready to swap out the PCB. I so want the car to get me into old age and cause me as little trouble as possible and when my son finally get the keys I don't want his learning curve to ruin his ownership pleasure!
You wouldn't want a hazard switch to self cancel on engine off. Thankfully this is not the case with the mechanical latching switches being discussed. 2014 on Classics use momentary switches though with electronic logic latching. This usefully cancels selection of rear fog light, screen demist etc. on engine off, the exception being hazard switch of course.