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Working on hopefully getting my New Project on the road and finally getting to drive this car after owning it for a couple weeks.
I need some help identifying some of these connectors / wiring...
Any help will be very appreciated! Thanks in advance
This 2 pin connector has 2 thicker Red wires that were tied together and ran both 2 the Positive side of the battery. Not sure if that's correct but the butt connector was falling apart anyway and needed to be redone 2 Connectors circled in red I assume are for the wiper / motor. Not sure what the one in blue is for. This is a black wire with a white trace and it was wrapped around one of my brake lines. Plus, my brake level sensor wiring is gone and missing. Not sure if this is related. Lastly. I've got these 3 mystery plugs just hanging out and a Heated O2 sensor to rewire.
1st pic: Not sure. Description suggests that the "red wires" may be the B+ hot at all times feed to the cooling fan relays? Not sure.
2nd pic: Red circles are wiper motor. Blue circle I'm not sure either. I remember. It is also the wiper.
3rd pic: Blk/wht is data-level ground. If a 91, could it be for the low oil level sender on the left side of the pan? (Only L98 with Low Oil warning is the 1991.) No L98 years have low brake fluid sensors.
4th pic: Green and gray connectors are for the removed Divert and Switching solenoids for the removed A.I.R. ("smog") pump. Black connector is for the missing EGR solenoid.
Last edited by IHBD; May 8, 2025 at 04:21 PM.
Reason: I remembered.
1st pic: Not sure. Description suggests that the "red wires" may be the B+ hot at all times feed to the cooling fan relays? Not sure.
2nd pic: Red circles are wiper motor. Blue circle I'm not sure either. I remember. It is also the wiper.
3rd pic: Blk/wht is data-level ground. If a 91, could it be for the low oil level sender on the left side of the pan? (Only L98 with Low Oil warning is the 1991.) No L98 years have low brake fluid sensors.
4th pic: Green and gray connectors are for the removed Divert and Switching solenoids for the removed A.I.R. ("smog") pump. Black connector is for the missing EGR solenoid.
I should of said it's a 1987, Sorry about that. Thanks for the input.
Looks like the red wires just need to be powered up again, and the 3 plugs in the last pic just need to be ties out of the way.
I guess I'll figure out the 3rd plug when I get a Wiper motor.
Do you think the Black White has something to do with the Low Brake Fluid Sensor??
you think the Black White has something to do with the Low Brake Fluid Sensor??
I'm not sure what a data-level ground wire in that general location in a 1987 would be for.
Again, there is no low brake fluid sensor until 1992. But there is a pressure differential switch. It is a tan/white wire. In an 87 with the park brake off and key in RUN, grounding the pressure differential switch tan/white wire will illuminate the BRAKE light in the center panel.
I'm not sure what a data-level ground wire in that general location in a 1987 would be for.
Again, there is no low brake fluid sensor until 1992. But there is a pressure differential switch. It is a tan/white wire. In an 87 with the park brake off and key in RUN, grounding the pressure differential switch tan/white wire will illuminate the BRAKE light in the center panel.
The black and white wire is the front vs rear brake pressure difference warning. The light is the brake warning light in the information center and I believe that bulb is also shared with the parking brake.
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In this case, the 1987 8A FSM does not represent my 87 unless it has turned black over the years. The black and white wire is definitely brake pressure warning. According to everything I read the FSM concurs with IHBD that circuit 33 should be tan/wht, ON MY CAR IT IS NOT. On my car it is blk/wht as proven with a multimeter by setting the parking brake which is tied to the same circuit (33) as brake warning.
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"I guess I'll figure out the 3rd plug when I get a Wiper motor."
Some things you should know about wiper motors.
1. Most do not come with the pulse circuit board (cover). The motor is sold in a lot of places but without the board. The board is one of the few non existant parts new or reman, maybe used yes.
2. You need to figure it out before buying because some wiper motors use 2 connectors and some use 3.
Donny: I think the blk/wht may be associated with the ABS wiring. In your first pic in post #7 the kluge of tape appears to be a diode package with a couple of blk/wht wires, and what appears to be the tan/wht under the tape package. I also see a blk/wht in pic in post #8 following the main loom. Does this wire go to the tape?
You have the FSM for 87, I don't. I looked in my 88 FSM for ABS wiring, and it shows a gry/wht circuit that may be the "diode package" I think your pic of the 87 is. (I know that the 86-87 ABS is a different system than the 88-89 system, so the two can't be compared.) A; Could the blk/wht actually be dk gray/wht, and B: Take a look at your 87 FSM ABS wiring for any clues.
That may have been a photographic mirage. The tape was for the B4P fan option sensor white wire, the loom was brittle, also no diodes. No tan/wht anywhere. The ABS wires are a seperate loom under this harness. The test clearly shows it is directly attached to circuit 33. Maybe some other 87 owners will check their brake sensor wire color.
Here is a pic of my Kludge (with a "d") up close
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OP - if you have the FSM(Factory/Field Service Manual) you use the diagrams in the EDM(Electrical Diagnostics Manual) and sort your car for yourself. You use the SPID for options and sort your car. It's the only legitimate plan moving forward. Yes it's good to have comments but only you can check connectors and wire colors for yourself.
There will be 3 connectors for the wiper motor, do you have a wiper motor now or actually need one? There's a short extension required regardless of which wiper motor you chose to use. The difference in wiper motors is the connector on the armature end frame. There's 2 terminal end frame and the later is a 3 terminal end frame. In your second snapshot w/blue circle, the adapter harness looks to be for a wiper motor with a 3 terminal end frame.
OP - if you have the FSM(Factory/Field Service Manual) you use the diagrams in the EDM(Electrical Diagnostics Manual) and sort your car for yourself. You use the SPID for options and sort your car. It's the only legitimate plan moving forward. Yes it's good to have comments but only you can check connectors and wire colors for yourself.
There will be 3 connectors for the wiper motor, do you have a wiper motor now or actually need one? There's a short extension required regardless of which wiper motor you chose to use. The difference in wiper motors is the connector on the armature end frame. There's 2 terminal end frame and the later is a 3 terminal end frame. In your second snapshot w/blue circle, the adapter harness looks to be for a wiper motor with a 3 terminal end frame.
Original Wiper Motor is just missing, The PO pulled it and never put it back, along with a ton of other stuff. A Guy is parting out an 85 fairly close to me. Hoping to find some time soon and pull a bunch,
The '85 being parted if original is likely a 2 terminal end frame so if you're wanting to source that from his part out you want the 5" harness that connects to the end frame also. You don't want it cut, you'd prefer that he unplugs it from the main harness so that you could just plug it in. If his has ever been replaced then it's likely the 3 terminal and likely don't need the harness. If you have the FSM 8A-201-5 shows the C191 connector for the harness.
Mystery Wiring!
