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JDM 92 wiring help

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Old 02-15-21, 10:01 AM
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JDM 92 wiring help

Spent a while last night trying to find a detailed wiring diagram for the dash harness, I found tons of diagrams but nothing helped me. Main dash harness doesn't show what I'm looking for, JDM wiring is slightly different it's not just mirrored.

In the process of cleaning up the mess of wires behind the dash, I noticed this connector is just hanging. I'm not sure where it connects can anyone help?



There is also this connector, I have not removed the plastic panel to confirm but I've been told it could be for an alarm system. Located passenger footwell, wires never join a main harness and connect here in driver footwell. Assuming the second connection on drivers side is stock, what would I connect back into it? Last pic shows the closest I got to finding it on a wiring harness (X-18), thanks in advance for any help.




Old 02-15-21, 11:18 AM
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What in your car isn't working? Its likely that plug is just not used for anything. It's only but so long. If you don't see anything it can plug into then it likely doesn't plug into anything.
Old 02-15-21, 11:28 AM
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Originally Posted by cr-rex
What in your car isn't working? Its likely that plug is just not used for anything. It's only but so long. If you don't see anything it can plug into then it likely doesn't plug into anything.
Everything works fine, just trying to tidy it up to help myself out with future projects. After posting I realized it might go where the faded white connector is directly above it, they look like they could be the same. Any idea what that controls?

Old 02-15-21, 11:34 AM
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the JDM cars had an optional automatic climate control, and the connectors may be on the harness weather the car had the option or not
Old 02-15-21, 11:51 AM
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Originally Posted by j9fd3s
the JDM cars had an optional automatic climate control, and the connectors may be on the harness weather the car had the option or not
Thanks for sharing that, that's probably what it is. Was hoping someone else with a 92 could look at theirs and let me know.



Old 02-15-21, 02:55 PM
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The second picture is definitely something aftermarket. Nothing is run like that stock.

Dale
Old 02-15-21, 03:11 PM
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Originally Posted by DaleClark
The second picture is definitely something aftermarket. Nothing is run like that stock.

Dale
Always nice to receive your input, thanks Dale. Going to try removing it tonight
Old 02-15-21, 05:32 PM
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I have a '92 Type X dash which is substantially intact including harness. There is also a very early wiring schematic around. There was some significant simplication after the first version.

Type X automatic mind you. Fully loaded including the wonderful automatic automatic air conditioning. Apparently the base A/C is also partially automatic ( I don't know in what way.)
Old 02-15-21, 06:26 PM
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Originally Posted by Redbul
I have a '92 Type X dash which is substantially intact including harness. There is also a very early wiring schematic around. There was some significant simplication after the first version.

Type X automatic mind you. Fully loaded including the wonderful automatic automatic air conditioning. Apparently the base A/C is also partially automatic ( I don't know in what way.)
You lost me at Type X lol never heard of that before. Automatic A/C? Now I’m really lost, my A/C works so I’m just going to tuck that connector away, is yours hanging like that too?
Old 02-16-21, 01:40 AM
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The spare dash is in storage. I will try to take a look in the next several days.

The automatic A/C was available on the top models, of which the loaded automatic transmission version was called Type X in 1992 (in Japan).

The system allowed you to choose a heat level and the system would attempt to keep the temperature at that level (hot or cold). This required four sensors, including a little bubble in the top right defroster vent. Problem was the chip running the system was not that fast and so it took a while for the heater/a/c to adjust.

It is good your a/c works. Keep an eye out for spare parts. Determine if you have an R-12 or R-132 system.
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Old 02-17-21, 02:30 AM
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BC Type X, A Closer Look


Glove Box area showing dangling connectors. Connectors to the glove box light are still connected.

Radio area of dash The part of the harness running down to the centre armrest has been cut off. Large cable in foreground likely ran to an aftermarket boom box.

Area behind the instrument cluster taken from the right end.

Section wear instrument cluster sits. I expected more plugs for the instrument cluster to show here, but maybe the sub-harness was removed with the cluster.
Old 02-17-21, 07:55 AM
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Originally Posted by Redbul
Glove Box area showing dangling connectors. Connectors to the glove box light are still connected.

Radio area of dash The part of the harness running down to the centre armrest has been cut off. Large cable in foreground likely ran to an aftermarket boom box.

Area behind the instrument cluster taken from the right end.

Section wear instrument cluster sits. I expected more plugs for the instrument cluster to show here, but maybe the sub-harness was removed with the cluster.
Thank you for taking the time to take these pictures!

I traced the wires around and I think I know what's going on, ill post details later today when I have more time.
Old 02-17-21, 08:08 AM
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Looks like the cruise control module plug to me. Post a better pic showing the wiring colours more clearly if you want me to be able to confirm for sure.

Last edited by Ceylon; 02-17-21 at 08:11 AM.
Old 02-17-21, 10:48 AM
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Everytime I go into parts storage I risk my life from a parts avalanche. But sure, next adventure, I will try a few more snaps,
Old 02-17-21, 10:55 AM
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I'll try my best to explain this as clear and simple as possible.

A little while ago I removed some aftermarket electronics. This included a turbo timer, whatever you call the unit that can give the "sleepy eyes" look to the pop ups, and what I think is part of an OEM keyless entry system (I never received the remote to utilize the keyless entry).

Picture 1: Shows what I believe was the receiver for keyless entry, definitely not OEM.
Picture 2: Shows removed door receiver, google search of top line of numbers brings up "S6 RH DOOR RECEIVER". This is an OEM part but the wiring harness behind the drivers side door was modified to accommodate this unit.
Picture 3: Shows what was behind the plastic cover in the passenger side (left) footwell. Another OEM unit (google search brings up "timer relay"), doesn't look like it's in the intended mounting position.
Picture 4: Shows connector discussed in the beginning of this thread. The green box (labeled "RELAY - DOOR LOCK") is what I believe the original connector plugs into.
Picture 5: Referencing picture 4, wires wrapped in electrical tape leaving connector are routed closely to another group of wires wrapped in electrical tape. These two groups of wires then get wrapped together with electrical tape and then join the main wiring harness.

My thoughts: previous owner bought newer components and integrated them into an older car to achieve keyless entry. Cool idea, if it's all factory equipment why the need for the ugly receiver in pic 1?






Old 02-17-21, 10:59 AM
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Originally Posted by Ceylon
Looks like the cruise control module plug to me. Post a better pic showing the wiring colours more clearly if you want me to be able to confirm for sure.
I'll post a better picture of the colors tonight, my car does not have cruise control so that would make sense.
Old 02-17-21, 02:57 PM
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WE could run a VIN number check to see the configuration the car left the factory. Or what does the white tag on the driver's door sill say?
Old 02-17-21, 03:49 PM
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Did any series 6 FD get keyless entry from factory? From what I've read online none did.

VIN is 108086
Old 02-17-21, 04:03 PM
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The wildcard bit is it's a 92, they did some odd stuff with the wiring in 92. The vin checks out as a manual type R in NU built on 21-04-92.
Old 02-17-21, 07:04 PM
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Originally Posted by Ceylon
The wildcard bit is it's a 92, they did some odd stuff with the wiring in 92. The vin checks out as a manual type R in NU built on 21-04-92.
here’s some pics of the smaller black connector and it’s wires



Old 02-17-21, 07:13 PM
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Well I removed the unit and connected the other side to the green box. My odometer no longer displays and the coolant buzzer makes a very short quick beep randomly until the car warms up. The beeping stops after 5 or so minutes of driving.

I used to have that issue with the beeping and odometer when I had all the old electronics in and random grounds all throughout the engine bay. Sticking the battery on a charger always fixed the odometer issue before, that’s no longer the case.

I haven’t heard the beep since I removed the first round of electronics, now I remove this and it starts doing it again. I hooked back up the unit I took out and the odometer still won’t come back on...even with the connector just hanging not connected to anything it still won’t turn on, any suggestions?

Old 02-17-21, 09:24 PM
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Keyless entry was an option in later models. Not sure when the option first became available.
Old 02-18-21, 02:11 AM
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Yep, that's cruise, some of the early JDM cars were wired up for it when it was not fitted, you can ignore this connector unless you want to fit cruise control.

Regarding the other issues, it does sound alarm related to me, I'd trace the wires and make sure they are wired as per the diagrams.

My '92 type x had the exact same alarm/central locking system, I had to unlock the drivers door within a certain time before starting the car for it to start. I ripped the lot out and put it back to standard before selling that car.
Old 02-18-21, 07:49 AM
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Good to know that's the cruise control connector.

I cleaned some grounds behind the dash and charged the battery over night, odometer came back to life when I turned the car on this morning and no more beeping

Thanks everyone for your help and input
Old 02-18-21, 12:54 PM
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It is interesting how often its the grounds.


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