zetec s 130

Hi, Been a member on here for ages, but never really posted much but now I could do with some help. I've bought an auto dimming rear view mirror to fit to my car, I'm looking at wiring it up and it has 3 wires coming from it, could someone tell me what i need to connect these to (I assumed i just needed to get power to it), or point me in the direction of a wiring diagram? Thanks for any help.

The Youth.

iTrader: (1)

the three wires are for:
ign fed 12V
earth
signal from reverse lights.

should be easy enough to work out which is which, the black or brown will be the earth and the other 2 one will switch it on and one will switch it off ( so that when you put the car in reverse the auto dip switches off so you can see out the back window!)

steve

zetec s 130

Thanks for your help, much appreciated!