i noticed these when we did the header install a few months ago, and meant to ask but never got around to it.
well i took a pic, ( if ya need more let me know) i tucked the cut end under the spark plug wires so i could get the pic. if u enlarge the pic u can see the other end goes into a black plug under the middle primaries.
does anyone know what these wires are for or where they go?
TIA
http://www.geocities.com/feefee133/wire.jpg

 

Are we on the passenger side of the engine? Is the 4th wire in the background purple or blue? Is the black plug connected to anything, or is it just hanging there? Are the cut ends of the wire tucked under the plug wire? If so, its just loose and not connected to anything at all? Not clear from your description or the picture.

Purple is used for the O2 sensors, so that might be a clue if the 4th wire is purple.

 

yes that is the passenger side. yes that wire is purple. yes the black plug is connected into another black plug that goes toward the back of the engine. tonite i will get the car up and try to follow them. yes i tucked the 4 wires under the plug wire to get thepic. otherwise, where they normally run i wouldnt have got a good pic of them. and yes they are cut and dont run to anything. they end under the plug wire. i will take more pictures tonite if needed.
since that wire is purple it is an 02 for sure?
when i did headers i had the rear 02 deleted, non emissions.
maybe u will be able to tell which 02 it is by where these 4 wires are running through the car?

 

Those 4 wires are definitely O2 wires.

 

well i guess they are rear, cuz i am not gettin codes!
if u could confirm this, i would be very thankful

 

I agree, those are O2 wires, I just did my LT install and that's exactly what mine look like..