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Hello everyone, so I’m doing a under dash wire harness swap on my 1992 civic Vx hatchback. I went to junkyard and removed under dash harness from a 1993 cx coupe, in order to have power windows, door locks and mirrors. Everything was going well under the dash, and door panels until I got to the passenger outside portion of the harness. I noticed my harness is missing a plug (female side) on shock tower mount, my old harness had three clips, this harness only has 2 big plugs and a smaller one that goes to the injector harness, my original harness has 3 big plugs for shock tower mount plugs and the smaller one for the injector harness.anyone help me out and figure out what I have to do in order to find those cables. Thanks .
Last edited by SoCalLX1247; Sep 9, 2022 at 11:07 AM.
The third plug that is only on the VX is for the EGR and the VTEC-E setup. On an Si/EX Harness, a couple of wires are there but in one of the two plugs that would move to the third "missing" plug. But even then you still have to run the wires from the ECU to the EGR on the firewall and I think the intake manifold.
I can dig up the info after this weekend, I need to move the two wires back to the third plug so will need to refresh my memory anyway. This weekend I have a road trip so your info will have to wait unfortunately.
It says the wires I needed to move to get a D16Z6 in and working. At post 247, I shared my documentation of the tower plugs for the various trims including the VX. this should give you the necessary info on what is needed to be added for that third tower plug.
Sorry fourth plug, my brain is dead, all the other trims have 3 plugs while the VX has 4 plugs. Seeing it in my photo's reminded me.
Oh and just to be clear, the missing plug from the DX/CX/LX harness is C129 just to be clear. Those are the wires you will need to run from ECU (C406) to the respective spots in the engine bay.
1992 VX to CX under dash wire harness
