Can't think of a better word than to echo John's, awesome work Rog
I assumed you had removed the PCB, if so does this mean the heater fan switch now directly operates the motor?
Hope you don't mind the following suggestion. I note that Spots can only be activated (correctly) with main beam but rear fog relay takes coil power from red/orange wire which is sidelight feed. I recall this is repeating MMC's loom wiring on 2006-14 cars which I always considered wrong. Ideally it should take feed from headlamp supply before dipswitch. This is how the later cars function with BCU control so possibly worth consideration given it's a simple fix.
