coming of the 02 sensor is-
1 white wire
1 blue wire
2 black wires

after the 02 connecter is -
1 white
1 black
1 yellow/red
1 blue/brown

I used the white wire after the connector and got a good reading.

 

Since the cobalt uses the light I would wire the backlight wire through the cluster fuse and the power through something like the cruise control fuse, just make sure you plug the wire into the side that isn't hot so that you don't defeat the purpose of the fuse.

 

do i have to use the dimmer wire??? cant i just power it, ground it, and connect the o2 signal?...

 

You dont have to connect it to the dimmer... but at night if it's too bright u wont be able to dim it down.

 

bleh. i was going to install a Faze A/R Guage in my car tomorrow, but I was complete unsure of how to go about doing this, but after reading this, I'm actually kinda scared of doing it, but I don't know. I might try to do it anyway.

 

but the thing is...when i dissconnect the dimmer wire....it acts like there is no power...grrr dam this thing...

 

i would just tap the light wire that goes to the wire in your ash tray that way the light come on when your lights are on and dims when you etc

 

thas the wire i used....its a green/white wire.....when my lights are off...the gauge is on....once i flick the lights on....the gauge shuts off......no dimming affect at all..

 

bumpppp

 

anyone?..dam i hate electrical

 

which wire does the white wire connect to??...anyone?

 

bump for one last question

 

man. i wish i could help you.. i'm going to be working on my guage soon, so i'll tell you whats up..

 

thank s man....i got the gauge runnin....its to pin #76....but that dimmer wire (white) is what i need to figure out.... honestly....i dont even wanna wire it i dont mind the brightness....but without it being wired the gauge dont even work....but when it is wired..and i flip the lights on..the gauge goes out..WtF?!?!

 

well i got a faze a/f guage... so it's a little different. i don't have any white wires or anything. hmm.. maybe i'll figure it out though.. pin #76 huh.. is that what you hook the wire that goes to the 02 sensor into?