lambda sensor wiring

[martinlaw]

Vehicle electrics are not my forte.

I am fitting a fuel/air ratio guage to my GTR and the lambda sensor I have has three wires, two white and one black.

I assume the black is the signal wire which attaches to the signal input on the guage. The two white wires must be for the heater in the sensor??

This is the problem - does it matter which way around the white wires are connected assuming one white wire to earth and one to 12v supply.

Can i used the same earth and 12v supply to power the guage?

Finally, I assume the 12v supply should come from the ignition switch?

Any advise would be appreciated.

Thanks,
Martin.

[martinlaw]

Thanks for the advise guys - it looks like a wide band sensor then.

Cheers,
Martin.