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S Chassis Technical discussion related to the S Chassis such as the S12, S13, S14, and S15.


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Old 06-18-2008, 04:21 PM   #1
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Name these plugs wiring help....

Okay in short im doing an ls2 swap but i need to know if im gonna need to keep these plugs below...Sorry in advance about the shitty cellphone pics my girl had the good camera

1. THe plug in my hand sit right behind where the ecu sit next to f3 plug but behind the big white plug in picture what the heck is this??? do i need it?? 10 wires


2. im missing what ever plugs into this blue relay...Do i need what used to be plugged there?

3. This plug is right along the floor close to the door and runs into the f3 plug 7 wires
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Old 06-18-2008, 04:33 PM   #2
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1st goes to your TCU.
2nd is the ECU power relay.
3rd is the body harness connector. Fuel pump is connected to that one. Not 100% on this one cause it has been a year.
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Old 06-18-2008, 04:35 PM   #3
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my car is a 1997 s14 auto
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Old 06-18-2008, 04:35 PM   #4
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Quote:
Originally Posted by S14DB View Post
1st goes to your TCU.
2nd is the ECU power relay.
3rd is the body harness connector. Fuel pump is connected to that one. Not 100% on this one cause it has been a year.
Thank you
Can anyone else confirm this???
If you dont mind can you elaborate on the tcu what is that and i guess i wont be needing #2 anymore
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Last edited by RUTH'LESSDET; 06-18-2008 at 04:57 PM..
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Old 06-18-2008, 05:57 PM   #5
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Transmission control unit. The steel box where your clutch pedal should be.
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Old 06-18-2008, 08:12 PM   #6
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Quote:
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Transmission control unit. The steel box where your clutch pedal should be.
\

is this the tcu that your are referring to?? from the driver side?????(the box is unplugged in picture)


Ok here are some better pictures: (All of these pictures are from the passenger side kick panel where the stock s14 ecu would sit)



ok so there pics arent the greatest either but hey maybe someone can see what im talking about.
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Old 06-18-2008, 08:26 PM   #7
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Are those your SMJ's in your hand?
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Old 06-19-2008, 11:26 AM   #8
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Quote:
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Are those your SMJ's in your hand?
I'm not sure what SMJ is but I'm holding the plugs for an 06 gto e40 pcm
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Old 06-23-2008, 09:45 PM   #9
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The plug with 7 pins running towards the back of the car is the EVAP harness, goes to a plug under the rear deck and then into the trunk for fuel temp sensor (in the tank), MAP-BARO sensor, and EVAP purge (under the car, mounted to the canister). You do not need any of it, it's all for OBD-II monitoring. Remove the entire harness as well as the canister and all related parts if you want.
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Old 06-25-2008, 05:55 PM   #10
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Quote:
Originally Posted by projectRDM View Post
The plug with 7 pins running towards the back of the car is the EVAP harness, goes to a plug under the rear deck and then into the trunk for fuel temp sensor (in the tank), MAP-BARO sensor, and EVAP purge (under the car, mounted to the canister). You do not need any of it, it's all for OBD-II monitoring. Remove the entire harness as well as the canister and all related parts if you want.
thank you
msg leng...
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