Homemade A/F Meter

[Agent Speacial Sauce]

Well, why not check for continuity between the base of the sensor and
the second wire?  Do you have the part number?  Maybe one is a
positive voltage supply and the other is the signal where as the base
is the ground?

George






---Khoo Teck-Khoon <tkkhoo at hotmail.com> wrote:
>
> The meter I am using is a digital voltmeter and the 2nd wire IS NOT
an 
> earth wire because there is no signal if connected to it. I have
deduced 
> that the earth seems to be base of the O2 sensor. Please help.
> 
> Regards
> tkkhoo at hotmail.com
> 
> 
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