Thanks all for the useful information. I had heard mention of a PCB, didn't realise it's just for the switch control, whatever happened to simple wiring
No aircon indicator on mine but I suspect probably identical to yours Roger.
So I may add them to the headlamp circuit or fit a separate switch which may be simpler. Will also look at what RS offer.
I haven't had a chance to get under and look at the harness yet.
