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Resolved 1G What are these connectors for/where do they go?

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gusu

15+ Year Contributor
1,950
33
Sep 9, 2009
Independence, Oregon
Any ideas?

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first one look like stock mas plug, second one looks like the low oil light for the dash? (not the oil sender on the rear of the oil pump that looks like the bell but the one on the front of the pump...)
 
Since you're a 90 the first one is either MAF, IAC, or CAS.

Second one is either the stock oil pressure connector or the dummy light.
 
Since you're a 90 the first one is either MAF, IAC, or CAS.

Second one is either the stock oil pressure connector or the dummy light.

My oil pressure gauge is working. The orange one on the front is also connected. I never noticed if there is another plug in for it.

As for the other I'll check those out and tell you what it was.:hellyeah:


*edit*

I just checked the ISC, and the CAS they were both connected and I would defiantly notice if the maf wasn't plugged in.

As for the other cord coming off the alternator I'm not sure. I only see a place to plug into on the front side of the oil pump... which is already plugged in.

Here is another picture of the the larger connector.
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*Yet another edit* I forgot to add that the connector only has enough length in it to turn it around to be shown in the picture. My car is also not running poorly, the only issue it has is a bit of a idle surge but I think that is from the ISC since it only does it on deceleration. Other than that I am having a issue with weird power loss, its only happening when the heat is on, the other symptom is that the car acts as if the battery is dying until I go jiggle around the battery terminal, which is brand new and the post was cleaned before replacing, it is also on tight. I don't know if that would be related to that connector from the alternator being unplugged or not and that area where the wire shielding is torn has no wires under it that are exposed. I wrapped it up with electrical tape for now.

Anyway, that's all I got for now. Any other suggestions I'll try out.
 

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I wonder if that plug may have been for the ABS. Also, When I get off work here in about 2 hours, i will check my car and take a look at what is plugged in where.

What part of the engine bay is that located at?
 
I wonder if that plug may have been for the ABS. Also, When I get off work here in about 2 hours, i will check my car and take a look at what is plugged in where.

What part of the engine bay is that located at?

I guess you don't have pics at work computer. It's the short lead off of the relay stack over on the transmission side. My car's in storage or I'd run and look but I think you're right about the ABS. I remember having a 'spare plug'.

The other wire is for either the factory oil pressure gauge or the idiot light. There should be two sensors on the OFH and two separate wires. It's hard to tell if you have lights out in your dash cluster since there's so many that don't get used but it's worth checking as well.
 
I guess you don't have pics at work computer. It's the short lead off of the relay stack over on the transmission side. My car's in storage or I'd run and look but I think you're right about the ABS. I remember having a 'spare plug'.

The other wire is for either the factory oil pressure gauge or the idiot light. There should be two sensors on the OFH and two separate wires. It's hard to tell if you have lights out in your dash cluster since there's so many that don't get used but it's worth checking as well.

I can see the pictures but I think I was getting confused by seeing the BOV and the AC sight glass... thinking where the heck... haha. I was just thrown off. But I still have my ABS so I will check as soon as I get off and post back up.
 
Where does the idiot light plug into? I can't seem to find it. The other plug comes right near the battery. Also the transmission had everything wired to it properly. Lucas English did my transmission rebuild, so I doubt he screwed anything up on it. Plus I haven't worked near the transmission since.
 
I've never had a 1G but about 4 inches to the right of your hand in that second picture looks to be a black plug. That may be the spot for the clip.

I believe it is to the AC fan I removed. I tried plugging it into that first and it didn't go.
 
I beleive the larger plug goes on the throttle boty control module. That.s where mine sits anyway's. The other I beleive is the dummy light.

What do you mean? The plug that is right on the throttle body on the back side? That is plugged in.
 
That is where the '90 cruise control box sits. I assume yours is removed.
http://a702.ac-images.myspacecdn.com/images01/17/l_bff67568f4825e8904111bdd4bb6ddc5.jpg

Very good guess!

But my car is the lightest package they offered. I don't have power windows, a rear wiper, power locks or anything like that stock. So no ABS or cruise control either.

The guy who owned the car before me was going to school to be an electrician for the air force. He sold the car to me because he had finished, the only thing I can think of his he took out all of the electrical from the car and rewired it the way he thought it should be done. He went as far as to put a circuit breaker for his amp, I need to remove those wires some day... LOL.

I wouldn't be too shocked if he got a whole new wire harness. I've looked EVERYWHERE and every plug in I can find is connected, all the ones I've looked up online don't look anything like it. I'm about to just say screw it.:banghead:
 
I figured out that I didn't notice the wire in the second picture had a little prong it fits onto on the oil pump. I feel stupid to say the least:ohdamn:
 
That could also be tps/throtrle closed switch. You need a logger. I have 2 non abs awd 90s ripped apart outside and neither have a plug like that NOT plugged in.
 
The idle switch on a 1g is one wire to a spade connector.


Try doing a resistance test on the wires for both plugs back at the ECU?

Yes, but on the 90's if you follow it back it's tied into the 3 wire TPS harness. That's a 4 prong connector and on the 90 harness all 4 wires (3 TPS, one idle closed switch) merge into a connector that looks exactly like that. The only other ones it could be are MAF, CAS, or IAC.

I've seriously got 1 90 AWD talon sitting out in the garage with the motor pulled and one complete 90 AWD talon out there, so I can reference any connector easily.
 
After looking at my car, i am pretty sure I figured out where that connector might go... as far as for what, I have no idea. There are 2 sets of connectors that are right under my upper intercooler hose. 1 is a 4-wire connector and the other is a 6-wire connector that looks just like that. I will try to get pictures.
 
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