Help with Air/Fuel gauge

[Sikoh]

Hi all, I'm just wondering if anyone can help me with installing a couple of guages I've just bought.
I have no instructions with them so a bit stuck.
I know about the wires for the lights but not sure where the grey wire from the air.f gauge goes? o2 sensor? as in the lambda senser on the exhaust?

Thanks alot
Si

1999 Golf GTI, 1.8t

[richw911]

http://www.42draftdesigns.com/tech.htm

[Sikoh]

Cheers for the link
I did look at that on a previous post but couldn't see anything about the air/fuel gauge? Perhaps I should look closer 

[richw911]

Cheers for the link
I did look at that on a previous post but couldn't see anything about the air/fuel gauge? Perhaps I should look closer 

Ah soz no air or fuel on that link  :embarassed:

[Sikoh]

ahh, glad you said that, save me looking again...theres alot of information there!!