Quote Originally Posted by EagleMark View Post
Years ago I rigged up a 7747 with power, ALDL and O2 for the 1 volt and did get a steady reading, more of an experimant to me and forget all the changes needed but did work, it was just a jury rig situation to help a guy tune his carb. But your right even with another sensor the ECM will still throw cross counts, now if you add another sensor and can get clean 1.0 volt it does work. Why bother? I don't know...
See the enlarged and bolded text for your reason why it didn't swing. ;)

So you got the gauge, was there any info on how to get a NB O2 sensor powered for gauge without ECM? Depending on ECM I have seen some stop cross counts in certain situations. Like my LT1 in WOT I get steady o2 readings from each side. No cross counts...
The O2 does not require power to work, unless there is a heater element. The O2 sensor creates it's own signal voltage. To use a NB gauge, all you would have to do is connect the gauge as normal, and connect the signal wire directly to the O2, no extra circuits needed.