I have an 01 truck. One of my narrowband sensors was bad, bank 2 post cat. I had an extra one from a 4.8 2004 van, both 4 wire O2 sensors. Both are bank 2 rear O2.

Are the O2's interchangable?
If so, does anyone having a wiring schematic? The colors are not the same.

I know it is not working becaise I am logging a sold .450 mv regardles of whether it is plugged in or not.