Originally Posted by xrsi
could help a little with the wires!

just fitted one onto my fiesta!
right on the lambda sensor the 2 white wires are for the sensors heater then the other 2 will be a feed and an earth i think, i only used a 3 wire lambda sensor on mine!
on the gauge, the red isd switched live, the black is earth and there should be i think either a purple or blue wire on the gauge, this is for the feed from the sensor!
Hello XRSi,
I have a few questions concerning the above:
(I am fitting a lamda sensor in my S1)
did you fit the lambda sensor in the exhaust yourself?
If so how did you do this?
Were do the 2 white (heater) wires go?
And are they connected directly to the ignition, or is a relais required because of the electrical current?
Thanks for answering the questions!
Cheers, Dimitri.