Lamba probe (which wire is the signal wire)

[Tobs]

As above i need to know which of the four wires from the lamba probe on a mark two are.

need to know which one is the signal wire

Wires on the probe:

2x White wires
1x Black wire
1x Grey wire

Which one?

[Tobs]

mmmmmmmmmmmmmmmmmmmmmmmm

[Ryan]

multimeter would it not be of use to you? or are all the wires used the same amps.

either that or a wiring diagram from somewhere should help

[GRAHAM2000VTR]

two white wire are your heated
grey is your dedicated earth
black is your signal

[Tobs]

thanks graham if it works you can have the country i live in

[GRAHAM2000VTR]

lol ok let me know if works out