Honda/NTK O2 sensor

[Dan]

I recently got two oxygen sensors from someone claiming they were off
a Honda Civic (although he didn't know for sure what type).  I'm
trying to determine if these are the wideband oxygen sensors as they
aren't what I was expecting.

The sensor barrel is approximately 2.5" long and perhaps 1.2 cm diameter
(approximately).  The hex bolt has "NTK" and "7AH" (I think) stamped
on it.  The the sensor element is approximately an inch long and 1 cm
in diameter (not including the threads).  There are five wires coming
off the sensor (red, yellow, orange, white and red).  The connector 
goes through what I can only describe as an extender cable, and then
terminates into two connectors.  One connector has red and black, the
other has yellow, orange, and white.  

I saw on some website that the heater was orange and yellow, and the
white and black was the pump cell.  I checked the resistance, and 
orange/yellow resistance is quite low (<5 ohms), and the white/black
one is somewhat higher, but not too much.  The red/black pair (should
be the sensor) measured infinite resistance (while cold of course).  The
wiring sure sounds like the wideband sensor, but the sensor itself 
doesn't sound quite right, and there is no cal-resistor in the harness
that I can see.

Any comments as to whether these are (or are not) the wideband sensors?

dan
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