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Gauge doesn't work + room lights always on

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Old 04-08-10, 01:18 AM
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Gauge doesn't work + room lights always on

Hey so I checked my meter, room and illum fuses and they are all fine. The meter one was blown and i replaced it hoping i had fixed the problem but it didn't! The gas, rpm, oil pressure and temp gauge don't work! I can turn the dash lights on and it turns on and the fan light next to the temp gauge turns red but nothing reads oh and even after i remove the key and close all my doors the lights on the door panels remain on

Please help! If you have the solution to this I will PAYPAL YOU $5!!!!
Old 04-08-10, 02:51 AM
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Have you tried another idiot light custer and CPU? Are all the fuses in the engine bay still intact and the right amp?
Old 04-08-10, 08:29 AM
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I don't have another idiot light or CPU to try. I will double check all the fuses to make sure they are the right amp but I did already check if they were all good and they were. The cluster was working not long ago I don't know what made it die
Old 04-08-10, 09:04 AM
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Hmm. I am waiting for a little bit more til I go out side cause it is so early so I was thinking. Here is a little background on the car. It is a weber carb na 2nd gen with a turboII chasis so I am assuming the harness is a turboII harness. Could that be the problem? Or would the ECU that I plugged in from my old car (sport model) be the problem?? The clips all clipped in perfectly but I think I might be needing that turboII ecu?
Old 04-08-10, 09:42 AM
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"The gas, rpm, oil pressure and temp gauge don't work! "

All of the above are part of one of two connections behind the gauge cluster. Connector "ME-02" houses all of the above which are not working. Check this connector as well as connector "JC-02" which houses six ground wires with one of those six ground wires coming from ME-02. JC-02 is located behind the dash and likely mounted up to or against the body of the car.
Old 04-08-10, 10:45 AM
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I just checked all the fuses they are all good and the correct AMP. I unplugged the clip behind the cluster to check the wires and I tightened all the bolts behind the cluster and still nothing.

The connector JC-02 where exactly would it be and how could I get to it? You say it is behind the dash do I have to remove anything to get to it?
Old 04-08-10, 10:59 AM
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Originally Posted by andresj
I just checked all the fuses they are all good and the correct AMP. I unplugged the clip behind the cluster to check the wires and I tightened all the bolts behind the cluster and still nothing.

The connector JC-02 where exactly would it be and how could I get to it? You say it is behind the dash do I have to remove anything to get to it?
It should be right up against the body/shell of the car as opposed to dangling in mid air so that should help locate it. Also, it has only six wires with all wires black in color so that should help as well and the black wires which come from the two plugs connected to the back of the gauge cluster (ME 01 and ME-02) will be connected to this particular plug.

Old 04-08-10, 12:58 PM
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Thanks it's really hard to tell but I am going to save the file and zoom into it so I can see more detail or more clearly. While I was looking for it I found this. I heard about a BLACK AND YELLOW wire being it? This one is really thin.. i hope it's this I can fix it!



Is it this? Where does it hook up to?

The disconnected wire is a BLACK/YELLOW wire.
Old 04-08-10, 03:02 PM
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The pic below is of the Circuit opening relay. JC-02 has "six" black wires and "only" black wires going to it. Reason why they are all black is because JC-02 is a "grounding plug" and therefore needs to be mounted to the frame of the car. I would suggest looking along the frame area on the drivers side. Pull back the carpeting behind the clutch/brake pedal area if you must in search of it.

Old 04-08-10, 03:38 PM
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Those wires look similar or the same to the ones I took a picture of. My car has no carpet or anything so nothing could be hiding from me only those dangle from under the steering column. I will keep my search I was wiring my efan and fixing my suspension I have a few things to take care of before I can take my baby back out to the streets! Thanks for taking your time to help satch I really appreciate it! BRB time to go back out.


Looking back to the other picture JC-02 is for turn signals, warning light, stop light but none for the temp gauge? My turn signals work am I looking for the right thing then?
Old 04-08-10, 04:45 PM
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Originally Posted by andresj
Looking back to the other picture JC-02 is for turn signals, warning light, stop light but none for the temp gauge? My turn signals work am I looking for the right thing then?
Look at the pic in post #7. Grounds numbered 8 thru 13 all are from JC-02. It houses many grounds with one of those grounds coming from ME-02.



As demonstrated by the diagrams, this is where your problems bridge with each other. Could it be something else? Of course so.
Old 04-08-10, 06:50 PM
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Well I did a lot of stuff besides that today and I tried doing what you said but it didn't work. The fuses had been checked, all the steps above have been taken, the cluster itself was taking out and tightened and the wires behind it were put back on to make sure they are on right. What other steps can I do?
Old 04-08-10, 07:08 PM
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Originally Posted by andresj
Well I did a lot of stuff besides that today and I tried doing what you said but it didn't work. The fuses had been checked, all the steps above have been taken, the cluster itself was taking out and tightened and the wires behind it were put back on to make sure they are on right. What other steps can I do?
Where did you find JC-02?
Old 04-08-10, 08:25 PM
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Originally Posted by andresj
Thanks it's really hard to tell but I am going to save the file and zoom into it so I can see more detail or more clearly. While I was looking for it I found this. I heard about a BLACK AND YELLOW wire being it? This one is really thin.. i hope it's this I can fix it!



Is it this? Where does it hook up to?

The disconnected wire is a BLACK/YELLOW wire.
The two wire plug that has black/yellow and Yellow/Blue is for the clutch switch and is cruise control related.
Old 04-08-10, 08:30 PM
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You say the meter fuse is good but the gauges don't work. So you NEED to pull the two round plugs off the combination meter and check the black/yellow wire out for power with KEY ON. IF there is no batt power, write back. IF there IS power, then put the meter on ohms and see if the BLACK wire in the round connectors is/has a good ground.

Does your combination meter have a boost gauge in it or the volt gauge? Turbo meters would have the boost gauge and no volt gauge.

A turbo EM harness used on a non turbo car or vice versa will cause a couple of the gauge problems but not all the problems. The fuel should still work.

What year car?
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Old 04-08-10, 08:58 PM
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It's a TurboII with boost gauge but it's on my NA
Old 04-08-10, 09:05 PM
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Originally Posted by andresj
It's a TurboII with boost gauge but it's on my NA
That's probably a good deal of what's wrong. The wiring for a turbo cluster won't match the wiring on a non turbo car........to some degree.

What YEAR car is this?

What is the number on the ECU?? N332? N326? N327? N??????
Old 04-08-10, 09:20 PM
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The shell/cluster is from a TurboII 1987 and my all the motor stuff and motor is from a 87 sport model.

I don't know what ECU it is how can I check this?
Old 04-08-10, 09:40 PM
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The ECU number is printed on its faceplate.
Old 04-09-10, 09:07 PM
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It's N326 sorry for the late reply
Old 04-10-10, 11:11 AM
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[QUOTE=andresj;9922652]The shell/cluster is from a TurboII 1987 and my all the motor stuff and motor is from a 87 sport model.

So it's a TURBOII chassis and wiring, but the motor is from a 87 non turbo with non turbo ECU N326.

Answer this as best you can. IS THE HARNESS ON THE ENGINE FROM A TURBO CAR OR A NON TURBO CAR?

If so, then there is the problem. Or at least I'm fairly sure thats the problem. The TURBO EM harness that fits on the engine, is NOT pinned like a non turbo EM harness and this results in PROBLEMS.

One way to tell if the EM harness is non turbo or turbo is this: The alternator gets a small two wire plug. The colors are black/white and white/black on S4. So on a Tubo EM harnes this plug does not exist. ON a TUBO car that alternator plug is part of the ENGINE harness that runs on the LEFT side of the engine bay. ON a NON TURBO car the alt plug IS on the EM hanress.

Bottom line from me is: if you put a TURBO EM harness on the engine it will mate with the Turbo FRONT harness inside the car and all will be well. IF you leave the NON TURBO EM harness on the engine and let it mate with the Turbo FRONT harness..................the mating pins b/t the Non turbo EM harness will not successfully mate with the Turbo FRONT harness.

This mismating will result in the gauges not working right to some degree.

Just my thoughts on what it might be. It's a KNOWN that if one has a non turbo car and puts a Turbo EM harness on the engine...........problems result. So the same can be said for vice versa.

ECU is not the problem. Harness on the engine is most likely not compatable with the Turbo cars FRONT harness (front harness mates with ME or meter harness for the gauges).

I'd put the turbo em hanress on the non turbo engine so all harness will be TURBO.

Kinda hope I understood what is what on that car.
Old 04-10-10, 11:37 AM
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Then again........somewhere at the beginning of this thread you said the gauges were working not long ago. Which makes me think the harnesses must be all turbo if that's the case. If it were a mismatch the gauges would not have ever all been working right at anytime.

Pull the plugs off the ECU and then see if when all the fuses are good, whether or not the gauges now work right. ECU normally has zip to do with gauges. Course rpm won't work, but oil and water temp and fuel gauge should work. Just looking for clues. I've started and run turbo cars with non turbo ECU and vice versa in the past, to just get a engine running and don't remember any gauge problems. Course I wasn't looking for gauge problems when doing that.

EDIT: Yeah, you said the cluster was working before and you don' t know why it quit. Back to square one. METER fuse feeds the gauge cluster from one of the round plugs on the back of the gauges. Check the black/yellow wire for power on the round plug for batt pwer with key to ON and try to forget what I just wrote.

Meter fuse powers the gauges. By the way, what did you do with the two socket plug I mentioned earlier. The one with a black/yellow and ??? yellow/blue wire????? Did you connect it to anything?
Old 04-10-10, 01:48 PM
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IF you turn the side light on or just put the headlights to full on, do the front and rear SIDE lights come on.

The lights in the instrument cluster have zip to do with power to the gauges.
Old 04-15-10, 01:01 AM
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Sorry my computer took a dump now I am back.

I was not very clear sorry the cluster worked before I did the swap. When I put it in the VOLT METER reads but nothing else. I was looking over by the ECU and there is a yellow clip that is not clipped in to anything but I believe it's the one clip that has to go in to something to make it read. I don't know how it could be possible to not have the other end though which is freaking annoying
Old 04-16-10, 02:36 AM
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Originally Posted by HAILERS
One way to tell if the EM harness is non turbo or turbo is this: The alternator gets a small two wire plug. The colors are black/white and white/black on S4. So on a Tubo EM harnes this plug does not exist. ON a TUBO car that alternator plug is part of the ENGINE harness that runs on the LEFT side of the engine bay. ON a NON TURBO car the alt plug IS on the EM hanress.
Weird cause the wire I have running to my alternator is what you just said a small two wire plug, colors black/white and white/black BUT it comes out of my left side but I removed this harness from my previous car because when I bought this shell he didn't have any of this or the ECU because he had his own standalone. I never really thought about my ECU being the issue til I remembered it is a T2 shell/cluster. What could be a simple solution be here? Find someone parting out a T2 and get his cluster + those few wires? The temp sensor one, oil pressure and the alternator one?


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