I just replaced the main engine harness on my 90 lx and noticed a couple of connectors on the drivers side near the battery tray that had nothing plugged into them. Anyone have a diagram showing what the connectors are for or where they go for the harness that comes through the firewall on the drivers side.........
Engine bay wiring harness
- Thread starter dwlmll2682
- Start date
Celeb
20+ Year Stangneter 
Can you take a picture of the connectors you're referring to? Is it the 2 connectors that come out under the wiper motor?
liljoe07
5 Year Member
Sounds like you have a mis-matched year EFI harness. But 302 LX Coupe's suggestion would really help anyone help you.
No, its not those connectors. It is more towards the front of the car below the ignition coil and starter relay.
Ill try to get a picture of it and post it this weekend. Im thinking it might be the connector at the end of the O2 harness, but im not sure exactly where that harness runs
Celeb
20+ Year Stangneter
I know there's normally a wad of wires under there but I don't recall an actual harness. Post the pics when you get a chance. 
liljoe07
5 Year Member
Injector Harness
Connector 31 is on the driverside of the engine bay.
Connector 39 is not in the Engine Bay, its by the ECM( just a FYI)
Connector 40 is the O2 harness connector, its on the passenger side by the Mass Air sensor.
May or may not help.
Connector 31 is on the driverside of the engine bay.
Connector 39 is not in the Engine Bay, its by the ECM( just a FYI)
Connector 40 is the O2 harness connector, its on the passenger side by the Mass Air sensor.
May or may not help.
liljoe07
5 Year Member
Cant seem to get the pics to load. Ill try again later. If it helps anyone the connector has two wires going to it. It is directly below the washer fluid resevoir mounted to the base of the strut tower. I dont think it connects to the main harness, it looks like it branches off of the harness that comes through the firewall on the drivers side
EDIT: pictures
EDIT: pictures
Celeb
20+ Year Stangneter
The AC clutch connector comes off of the main harness, right? Cuz this one is coming off the harness that comes through the firewall on the drivers side, and it is mounted all the way at the bottom of the strut tower. I think that the circle i put on the picture made it a little confusing cuz it has that connector circled but it was more to show the general location of the connector, which is behind that mess of wires, hard to see from that angle. If it helps the connector has 2 wires running to it
ID89GT
10 Year Member
hmm, I guess Ill have to double check the connectors. Since I dont have A/C that connector would not be hooked up, right? Also, I thought that connector came off of the main harness that hooks up to the computer.........I tried to start it yesterday and the fuel pump is not getting power, so im gonna have to do some tracing to find out whats going on. I also have a couple of other connectors that I noticed were not plugged in, Ill have to take some new pictures, hopefully a little bit better than the last. Thanks for the help so far, I can see that this project is far from over.
Wow your power steering bracket is like super clean. Mine is all dull
I had the enginge all apart so I cleaned up most of the parts and gave them some fresh paint to clean up the engine a lil, guess it worked.
Please post the wire colors with the solid color and stripe color. They help identify the circuit and its function. Do not depend on a photograph to do the job, since the camera and the device the photo is viewed on can alter the color presentation. Clean the wires with some solvent before trying to identify them.
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