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View Full Version : Lets play identify the connector!



Doowstados
11-20-2012, 09:17 PM
Pretty sure it's a ground, my label fell off though. Where's this go?

http://i13.photobucket.com/albums/a265/doowstados/52A55CD6-1722-404C-9BAB-368E6F1619EA-11395-000005F7376F3325.jpg

Hookecho
11-20-2012, 10:31 PM
It is the ECU ground and goes to the backside of the intake manifold. There is a stud on one of the runners that it goes on.

Doowstados
11-20-2012, 11:27 PM
Thanks, that's what I suspected but I wanted to make sure.

METDeath
11-21-2012, 06:31 AM
I thought that was the injector ground? However, I've only seen our wiring harness completely off the car once, so I could be wrong.

vip09
11-22-2012, 06:43 PM
No, the injectors ground through the ecu. They get +12v constant and fire when the ecu grounds them.

Doowstados
11-24-2012, 02:49 AM
Couple more connectors I need identified. I won't be using cheap masking tape to label these things anymore.

What are these for and where do they go?

This one is on the side of the coolant reservoir, it comes off of the body right by the driver side headlight. EDIT: It's for the fan, found it. Still can't figure out the next one though!

http://i13.photobucket.com/albums/a265/doowstados/C713A559-5F6C-4247-A011-F1E4DCCF95DB-1679-000000C03AEED5B8.jpg

This one is a spade connector plug with a yellow/green stripe wire. It is located on the harness right behind the battery, where the harness splits three ways.

http://i13.photobucket.com/albums/a265/doowstados/C1CAA253-091B-4F7E-AF42-A84B30FC613C-1679-000000BA67AFE146.jpg

acidice333
11-24-2012, 04:20 AM
That last one connects on the coolant neck (under the distrib) .. its on the underside/toward the rear of the pipe I believe... least thats what it looked like to me

Doowstados
11-24-2012, 05:58 AM
That last one connects on the coolant neck (under the distrib) .. its on the underside/toward the rear of the pipe I believe... least thats what it looked like to me

Nope, already have that one plugged in. The connector does look similar though. I almost want to say this is a ground, not sure...

Hookecho
11-24-2012, 01:58 PM
It's either the coolant temp gauge wire or the oil pressure sender wire.

Doowstados
11-24-2012, 06:37 PM
It's either the coolant temp gauge wire or the oil pressure sender wire.

Both of those are already plugged in though :laugh:

Galcobar
11-24-2012, 11:08 PM
Might be for the AC system. I come up with that as my car doesn't have AC, but does have a connector just like that sitting next to the water neck without anything into which it could plug.

http://www.celicatech.com/gallery/files/5/0/7/coolant_sensors_thumb.jpg (http://www.celicatech.com/gallery/showimage.php?i=18659)

Doowstados
11-24-2012, 11:20 PM
Might be for the AC system. I come up with that as my car doesn't have AC, but does have a connector just like that sitting next to the water neck without anything into which it could plug.

http://www.celicatech.com/gallery/files/5/0/7/coolant_sensors_thumb.jpg (http://www.celicatech.com/gallery/showimage.php?i=18659)

I have A/C and its all hooked up too though :(

EDIT: also, it isn't from that part of the loom. It's coming out right at the 3 way split, not on the end of the harness.

Doowstados
11-24-2012, 11:22 PM
Thanks for trying guys, keep the suggestions coming!

rizin
11-24-2012, 11:36 PM
Ok Y-G goes to your temp sending unit. The Y-B goes to your oil pressure switch. The EFI temp sensor should have red and brown wire in the connector. Hopefully that helps. I had to go into the combination meter part of the wiring diagrams to find the Y-G.

T-spoon
11-25-2012, 03:06 AM
Umm, starter? That is, if that wire is supposed to go somewhere else and that frees up another single wire.

rizin
11-25-2012, 05:54 AM
I just got home from Utah and pulled out my 92 5s harness I know there is some differences. The plug you show is to the temp sending unit for the dash gauge on my harness light grey plug and a yellow wire with green strip . The black spade connector is for the Oil pressure gauge with a yellow and black strip wire and black plug. Then you should have the two prong medium grey connector for the EFI temp sending unit with a brown wire and red wire. Another grey plug with a single white wire I forget what this plug was for. The only other spade connector I can find is a black one with a large gauge black wire that is for the starter. If you can give us a wider picture of what you have connected if possible. The only other Y-G wire I can find going through schematics is the thermister (sorry can't spell) to the A/C amplifier.

rizin
11-25-2012, 06:01 AM
After looking at the TVV thread looks like plug color is different between our harnesses.

Doowstados
11-25-2012, 10:14 PM
Well, I started the car for the first time with the new engine today and lo and behold got a code 22 (temp sensor circuit) so you were right rizin!

Thanks for all the help everyone!

Doowstados
11-25-2012, 10:20 PM
Where does the wire plug in? On the coolant neck? I can't find a plug for it anywhere.

l0ch0w
11-25-2012, 10:47 PM
There are 3 plugs that should plug into your coolant neck.

I guarantee you that plug is for your coolant gauge temp.

The green 2 pin plug goes to your EFI temp sender, the grey 2 pin plug is the cold start injector temp switch, and the single wire goes to the sender that looks like this:http://www.turbomr2.com/MR2/HowTo/Engine_Upgrade/Rebuild/Images/Electrical/Temp_Gauge_Sensor_6235.JPG

You shouldnt get a CEL unless the green EFI temp sender is giving you problems...

rizin
11-26-2012, 05:19 AM
Well looking at your TVV thread right next to the orange connector looks like the water temp sensor. It also looks as the spade is missing or bent down.

Galcobar
11-26-2012, 12:34 PM
:stupid:

The photo I linked is of the water neck, and if you look carefully you can see the temperature gauge sender unit -- or at least the body of it -- half hidden under the bracket, to the left of the tan connector for the cold start injector time switch. It's a single-wire spade connector as Rizin has shown you.

Doowstados
11-26-2012, 04:08 PM
:stupid:

The photo I linked is of the water neck, and if you look carefully you can see the temperature gauge sender unit -- or at least the body of it -- half hidden under the bracket, to the left of the tan connector for the cold start injector time switch. It's a single-wire spade connector as Rizin has shown you.

Yeah, I mixed up the spade connectors and plugged the Y-B one in there because all the rest of the connectors in the water neck come from that part of the loom. Now I can't figure out where the Y-B connector goes, though...

Galcobar
11-26-2012, 07:28 PM
Oil pressure switch as Rizin mentioned?

Doowstados
11-26-2012, 08:05 PM
It definitely isn't the oil pressure switch. I can ground out the wire I have connected to the oil switch and have the light come on, so it's got to be something else.

rizin
11-27-2012, 06:32 AM
Can you give us a pic of the connector that is connected to the oil pressure switch and the wire color. If your harness has not been messed with Y-B should be the wire going to the oil pressure switch. One thing about color codes in harnesses they normally don't use the same color code in the same area, some areas that they will have the same color of wire like your distributor running a red wire and EFI water temp sensor but they are for multiple wire plugs that have other wire colors to help identify them Like having a wire with a main color and a strip.

Doowstados
11-28-2012, 02:22 AM
Sure, when I get back to SD I'll take a picture. Thanks again everyone.

Doowstados
01-08-2013, 09:49 PM
Got all the wires figured out except this Blue-Y wire.

I have a sneaking suspicion that this is somehow related to my blower motor problem in my other thread...

http://i13.photobucket.com/albums/a265/doowstados/2A60A7ED-D3A9-4E84-AD2A-7E849EFDD670-17267-0000078524A85FE4.jpg



(The Y-B wire is my oil pressure wire, but it's been replaced with a mechanical gauge).