If the grey plug is for the electric adjustments and the yellow is for the airbag the green must be for the heating?
I doubted that at the time, but only because of the guage of the wires - they're very thin and the current for heating must be high. And since the only wire that I've not connected is the thick blue one and my seat heating doesn't work...?
But either way, I'm going to have a look for the thread TopCat mentions, since we need to sort this out. Those flashing icons are maddening.