O2 Wiring *PICS*

[4g63telantra]

I have my stock 02 sensor wiring off the harness. A few days I picked up a universal 02sensor for my 1G.

Has anyone ever hooked up a universal o2?

This is what I have...

 

[lasertim]

The universal one should come with instructions that tell which wire does what. As for the stock o2 look in your factory service manual or PM Steve and I am sure he would know.

I would look it up for you but my service manual is an hour away.

 

[luv2rallye]

For 1g:
(From DSM Backup manual for 91 DOHC turbo)
The harness side round connector has pin 1 in upper left, 2 upper right, 3 lower left, 4 lower right.
Harness side: red (pin 3 - goes to mpi relay for power) and black (pin 4 - goes to ground) are the heaters. Black (pin 2 - goes to ground) is signal ground and white (pin 1 - goes to ECU pin 4) is signal.
Sensor side: Every after market O2 has different color wires. The 2 same color wires, usually white (but sometimes black), are the heaters (go either way - they measure about 12 ohms so you can easily find them even if they are not the same color). The other 2 are the signal and signal ground wires. If black and grey, try the harness black to sensor black and harness white to sensor grey. If it doesn't work reverse these two. If you have 2 blacks, a blue, and a white, see here: http://www.dsmtuners.com/forums/attachment.php?attachmentid=48046