Decent Wire Diagram

[SC1]

Well, I'm trying to figure out the wiring on the O2 Sensor on the 87, trying to figure out what the 4 wires at the plugs are. I know the Black single plug is the signal from the O2, and presuming two of the three wire plug are for the heated, but would like to know what one is NUL as there is only three wires at the sensor itself. If anyone knows for sure what the four colors are for, or has a decent diagram ( my Haynes isn't showing this circuit) thay can share, that would be awsome.

Thanks

[SC1]

Ok, so after looking around I found this diagram:

 

Diagram

 

Colors are:

 

On the Vehicle - Single wire plug white, three wire plug 1 black, 1black pink stripe, one black white stripe, black seems to be NUL.

The New O2 has black red white, white Sensor, red 12volt, black ground.

The old has four wires although the blue seems to be NUL.

 

Can anyone clarify this hook up? The diagram isnt too clear on whats ground, 12v, and sensor.

I'm figuring White is sensor, Black/Pink is ground and black white is 12volt.

Ideas?

Thanks

 

UPDATE

 

So after some time with the multi meter, White is signal to the computer, Black/white strip is 12volt, Black/pink strip is ground, Black in the same plug is NUL.

Edited December 8, 2007 by SC1