Lei Siew Long

i know this has been covered many, many times but, not to the extent of wiring it through the shock tower harness, for a factory look.

the car is a 92 civic CX with a 94 GSR conversion. i did the wiring of the knock sensor by pinning a wire to the empty slot on the CX shock tower harness that matches the GSR harness and would like to do the same for the four wire 02:


blue/red wire is the knock and the yellow/red wire is the wire i pinned in for a factory look





civic's CX subharness with new wire pinned in:




integra's engine harness, showing the knock sensor:

Lei Siew Long

anyone?

Katman

didn't we resolve the 02 wiring situation through IM ?


A recap of what we spoke of privately:

You have a 92 CX civic w/a GSR engine and you are using the GSR engine harness as well.

By factory default, all trims of the 92-95 civic (non-vtec & vtec) have the 4-wire 02 sensor wiring integrated from the ecu plug(s) out to shock tower plug, which posted images of. All integra's use a 4-wire 02 sensor as well.

So, since you're running a GSR engine harness which has the 4-wire 02 already integrated into it, you've just mated the links between the engine harness and the shocktower plug-->ecu harness and are complimenting each other's 4-wire 02 sensor connection, which = plug n' play. You don't have to wire anything up 02 (4-wire) related.

If someone plans to reuse a 92-95 CX engine harness on an engine+ecu that requires a 4-wire 02, then that person would have to add 3 more wires to complete the 4-wire 02 sensor on the engine side of the CX harness only, not to the shocktower male plug side of the harness.

Lei Siew Long

this was before the issue was resolved on IM. thank you though.

Katman

here's a little diagram I made today, regarding 02 & VTEC wiring...




Modified by Katman at 4:51 PM 7/14/2003