Drivers side door speaker in my 6n isn't working and I think I've figured out why. Problem is there are 3 wires split here, blue and blue/brown are for the speaker, but what's the white one do? The mirror works fine and that's the only other thing I can think of... Should I connect it back up?

The White wire is the power to the heater element on the mirror

Oh. I was not aware my mirrors were heated. Seems pretty useful, I shall reconnect it

So the 6n L comes with electric & heated mirrors which not even my Nissan has, but still wants me to roll the windows down by hand. What is this

I know it strange, you get all singing & dancing mirrors even on "poverty" spec versions :)

They only operate when the rear screen heater is selected

Isn't that just the German sense of humour?