Original (Australian spec') mirror
Wire Combination Polarity Observed Function

blue -
yellow + right
brown + down

blue +
yellow - left
brown - up

purple + light on (polarity sensitive)
pink -

black - fold inwards
white +

black + fold outwards
white -

Aftermarket mirror
Wire Combination Polarity Observed Function

purple -
yellow + up
brown + left

purple +
yellow - down
brown - right

blue + light on (polarity sensitive)
pink -

So just crossing the purple and blue wires made the light work
Now switch UP/DOWN moves mirror LEFT/RIGHT and vice versa I can't see an easy way to correct this
Also for some reason the new mirror only folds out when I first start the car (and have the push button in the correct position) so passable, but not ideal. Grey (heater) wires unused and black/white unchanged.