Hi Greg,
finally gtetting my auto dimming mirror! at long last.. Only possible
problem is I think the guys have sent a "pearl grey" one and I'm now not sure if mine is actually a grey or beige interior.. Looks more beige to me now.. But if its that close it won't matter
Anyway I've also found out what the other two wires are for..
Pin 1 White = Power +12v
Pin 2 Black = Ground
Pin 3 Grey = Reverse (disables dimming function when reverse is selected) But not sure if it needs to go high (+12v) or low (ground) to work.
Pin 6 Green = Interior Dome Inhibit (Like reverse, it's used to disable auto diming when interior light is switched on)