oxygen sensor connector colors

[g96nt]

Can one of you guys go look at your 9-5, and tell me what color the connectors for the front and rear o2 sensor are? I think the gentleman that made/installed my downpipe put mine in backwards.

I know that one is light, and the other is dark grey, but I don't know which is which.

Thanks!!

[DrewP]

Both sides of the connector are colored.

Black is the front.

Grey is the rear.

Blue is crank position sensor.

[g96nt]

Thanks. That's what I was looking for.

I bought a Walker o2 sensor(direct fit), and it's light-grey, and the vendor shaved the tabs off of the sensor, so it'll fit in both connectors. What's weird, is that it looks like it'd fit perfectly, if he hadn't. This is the same sensor FCP sells as a direct replacement, too.

I'm hoping this thing works out. it'll be a much cheaper alternative to the usual Bosch.
($50 Vs $100+)