Zenki and Kouki S14 F3 Plug Wiring Differences - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

dongoesby · 08-16-2009, 05:36 PM

After months of research on SR20 wirings (s14), I found out that with a matching engine harness and ECU, you can basically put it into any s13 and s14 with repining.

Now I have a Zenki S14 SR20 with complete harness and ECU ("WE") repinned to a 95' OBD-I Zenki S14 chasis. My objective is to swap this to my 98' Kouki S14 chasis. Since Kouki S14s are OBD-II, I understand that there are only minor wiring differences between the two S14s. All I have to do is to repin the F3 plug (dash wiring).

The harness has been pulled out of the car now. This should not be hard (even a local shop refuses to take my money and told me to do it myself). However, Since I've never done wiring before, I found myself failed reading the 200 pages wiring diagram on the FSM, and I tried but failed matching the wiring with the diagrams found on internet. (the wire colors are all different from the online diagrams i found).

Can anyone enlight me with the Zenki and Kouki S14 F3 wiring differences?
Or maybe I should pay some professionals to do it for me?

dongoesby · 08-16-2009, 05:48 PM

Quote:

The only thing he has to do is change two wires on the f3 plug of the harness thats it. One wire is for AC switch the other is just a ground.

On the F3 Plug on your already converted engine harness (the large white plug that goes under the dash on your s14)

Move Cut wire going to Pin 16 (Color: Yellow/Black) on your f3 plug and splice it to the wire going to pin 46 (Color: Orange/blue) (if there isn't one then take extract wire and pin from either port 35, 36, 39 (all empties) and splice that to the wire on pin 16 then mount the pin in hole 46.

Next steal a pin/wire from either pins 9, 13, or 14, or use the large pin that you got from the Yellow/black (pin 16) wire and plant that into the empty socket on pin #2. Run that wire to ground on the chassis.

Here is a pdf showing your F3 plug and where all pins go on the 97 S14: http://www.rbforums.org/pdfs/1997f3pinout.pdf

Says by our member, opponheimer, that there are only two wries that needed to repin. However, again, I failed to locate the Pin 16 (Color: Yellow/Black). On Pin 16, I found different color wire.

dongoesby · 08-17-2009, 01:17 AM

bump for answers!

dongoesby · 08-17-2009, 10:08 PM

maybe i should take this to my local shop...

Lockie · 03-03-2016, 09:21 PM

hey mate did you get it sorted? what did you need to do? I'm looking at doing the same

Kingtal0n · 03-04-2016, 04:50 PM

A looong time ago I had it all figured out
http://www.freshalloy.com/showthread...ification-pros

But the pics are missing now. I might have them somewhere backed up. Will check around.

Also for now, this might help
http://zilvia.net/f/showthread.php?t=559982

Kingtal0n · 03-04-2016, 05:04 PM

Ill post some of what I found in my backup ( I have more stuff spread out but this should start us off )

First some pics:
This is not mine, but it might be useful:

F3 plug ID, I made this by looking at an actual harness

Now a text document I have, I didn't make it (I dont think so anyways, I dont remember):

These instructions will allow you to wire a 1995-1996 SR20DET S14 blacktop (WC ecu, black or red sticker) To a 1995/1996 240sx. The wiring for a 96 240sx is different than a 95 wiring, however, my 96's only differences were not important in the wiring so i wired it like a 95.

1995 sr to 1995 240sx, S14 blacktop w/ vtc.
This is just the F3 plug wiring. you still need to lengthen the maf wire, o2 wire, and some other misc bullshit.

The only diagrams I used to make this paper were my S14Pinout-Colors.jpg, which matched my KA harness pinout (verified before starting) and my SR20 ECU pinout XLS file on my website.

l/y = wiper switch is present on s14 sr harness pin 47 moved to pin 27
moved black/red from left to right 9 to 1
moved blue/red (defroster) present in sr moved to pin 3 from i think 12
took pins 10 and 11 from ka harness and put into sr harness same places (empty in sr harness)
took pin 16 from ka and put into 16 in sr harness
moved pin 25 from ka to sr harness it was empty in sr harness cooling fan
oraNGE BLUE ON sr harness in pin 37 is for the low cooling fan relay, so pulled it out and soldered it to pin 41 on the sr harness, which is green/black useless. So sr pin 37 solder to pin 41. lose wire from 41. 37 also is no longer needed (empty)

the other orange blue wire at pin ?? is the start wire. find the s14 ecu pinout and follow the start signal wire to the f3 plug. its orange blue. that wire gets pulled out, and soldered to pin 34 in the sr f3 plug. thats your start signal. it might need to be pinned in using the orange wire off the ka harness i did do that.

the blue/red from pin 27 on thye sr harness goes to: no where?
I cut it and soldered the blue/yellow wire (wiper intermitten switch) to the bluered at pin 27. I moved the blue/red from 27 to no where?

tied black pink (pinned in from ka) and yellow/black (pinned in from ka) together. this turns on a/c

yank the black/yellow from pin 35 on the sr harness. thats your fuel pump relay wire. Tie it to the black/pink wire you pinned in at pin 11 on the sr harness.

Find the brown wire (sr harnes) around pin 20~. Pull it out.
Find the black/yellow wire (sr harness) in pin 18. pull it out.

Install the just removed brown wire into pin 18. this is your o2 sensor 12v.
The black/yellow wire you removed from pin 18, is your IACV wire (sr harness) I tested myself with a multi. Tie it to your already pinned in black/yellow at pin 10 (sr harness)

Pin 21 (sr harness) is orange. Thats your MIL wire. Movve it to pin 30 (sr harness) there you go working MIL.

pin 24 is red (sr harness) thats your "thermisistor control aplifier" whatever pull it out.

Pin 26 (sr) is green/white.
Pin 46 (sr) is blue/black. Thats your tachometer signal. It goes to pin 26. Pull the g/w from 26 out and replace it with the pin 46, blue/black.

pin 45 (sr) is yellow. its your temp gauge. move it to pin 28 (sr). multi verified to the harness.

pin 29 (sr) is green/orange. this is your neutral switch wire verified to pinout.
move it to pin 40. at 40 you will find a wire g/y, this is your "ac relay" wire.

clear out pins 39 to 35 jus tin case. remove them. sr harnes.

now move the purple wire from pin 48 (Sr harness) to pin 42. thats for your wiper. not power steering.

move pin 44 (sr) yellow/green to pin 24 (empty now) thats your speedo wire.

The pin 44 that used to be y/g should be for some IACV shit. but i dunno what. "FICD?" it says.

This could be incomplete beware.

carlosj812 · 03-06-2016, 08:51 AM

ok this is nice but I have 2 questions, first one do I have to wire or splice anything on the ecu plug on the sr and second I have another white plug smaller than the dash plug in the sr harness do I have to wire that too. I know you probably get that question a lot this is the first time I find a thread on s14 sr swap on s14 ka thank you.

Kingtal0n · 03-06-2016, 02:02 PM

Quote:

Originally Posted by carlosj812

ok this is nice but I have 2 questions, first one do I have to wire or splice anything on the ecu plug on the sr and second I have another white plug smaller than the dash plug in the sr harness do I have to wire that too. I know you probably get that question a lot this is the first time I find a thread on s14 sr swap on s14 ka thank you.

The ecu plug is left alone unless you specifically want to tap into it for something. Like if installing an AVC-R or SAFC or to ground it differently.

Need pics of white plug, not sure how many white plugs there are. I recall one on the s13 harness but not the s14 harness, just the F3 and relay by the ecu plug is all i can recall atm

carlosj812 · 03-06-2016, 05:03 PM

Ok thanx man and yeah every single thread ive seen i never saw another white plug in there s14 harness the plug is located next to the f3 plug. Also i used the ka lower harness but the plug for the oil pressure switch is different, can i use the ka oil pressure switch?.

gtfourdreams · 01-11-2017, 07:15 AM

I know this is an old thread but just wanted to point out that kingtal0n's 1995 KA24DE pinout is correct. the first pic with 1995 and 1996, side by side is incorrect because they are based on TWO different pinout counting methods. Using the pinout that kingtal0n used (ie. counting all the large pins first, before counting all the small pins) I've fixed that image here so it's not so confusing.

on the left, 1995 S14 USDM KA24 and on the right 1996 USDM KA24
http://imgur.com/KL92fhf

08-16-2009, 05:36 PM	#1
dongoesby Zilvia Addict Join Date: Mar 2007 Location: San Francisco Age: 34 Posts: 756 Trader Rating: (17) Feedback Score: 17 reviews	Zenki and Kouki S14 F3 Plug Wiring Differences After months of research on SR20 wirings (s14), I found out that with a matching engine harness and ECU, you can basically put it into any s13 and s14 with repining. Now I have a Zenki S14 SR20 with complete harness and ECU ("WE") repinned to a 95' OBD-I Zenki S14 chasis. My objective is to swap this to my 98' Kouki S14 chasis. Since Kouki S14s are OBD-II, I understand that there are only minor wiring differences between the two S14s. All I have to do is to repin the F3 plug (dash wiring). The harness has been pulled out of the car now. This should not be hard (even a local shop refuses to take my money and told me to do it myself). However, Since I've never done wiring before, I found myself failed reading the 200 pages wiring diagram on the FSM, and I tried but failed matching the wiring with the diagrams found on internet. (the wire colors are all different from the online diagrams i found). Can anyone enlight me with the Zenki and Kouki S14 F3 wiring differences? Or maybe I should pay some professionals to do it for me?

03-04-2016, 04:50 PM	#6
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 38 Posts: 4,649 Trader Rating: (17) Feedback Score: 17 reviews	A looong time ago I had it all figured out http://www.freshalloy.com/showthread...ification-pros But the pics are missing now. I might have them somewhere backed up. Will check around. Also for now, this might help http://zilvia.net/f/showthread.php?t=559982 __________________ 5.3/4l80e/turbo 240sx playthrough: https://tinyurl.com/turbo240

01-11-2017, 07:15 AM	#11
gtfourdreams Join Date: Apr 2002 Posts: 7 Trader Rating: (0) Feedback Score: 0 reviews	I know this is an old thread but just wanted to point out that kingtal0n's 1995 KA24DE pinout is correct. the first pic with 1995 and 1996, side by side is incorrect because they are based on TWO different pinout counting methods. Using the pinout that kingtal0n used (ie. counting all the large pins first, before counting all the small pins) I've fixed that image here so it's not so confusing. on the left, 1995 S14 USDM KA24 and on the right 1996 USDM KA24 http://imgur.com/KL92fhf Last edited by gtfourdreams; 01-11-2017 at 09:28 AM..

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08-17-2009, 01:17 AM	#3
dongoesby Zilvia Addict Join Date: Mar 2007 Location: San Francisco Age: 34 Posts: 756 Trader Rating: (17) Feedback Score: 17 reviews	bump for answers!

08-17-2009, 10:08 PM	#4
dongoesby Zilvia Addict Join Date: Mar 2007 Location: San Francisco Age: 34 Posts: 756 Trader Rating: (17) Feedback Score: 17 reviews	maybe i should take this to my local shop...

03-03-2016, 09:21 PM	#5
Lockie Join Date: Feb 2016 Location: New Zealand Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	hey mate did you get it sorted? what did you need to do? I'm looking at doing the same

03-04-2016, 05:04 PM	#7
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 38 Posts: 4,649 Trader Rating: (17) Feedback Score: 17 reviews	Ill post some of what I found in my backup ( I have more stuff spread out but this should start us off ) First some pics: This is not mine, but it might be useful: F3 plug ID, I made this by looking at an actual harness Now a text document I have, I didn't make it (I dont think so anyways, I dont remember): These instructions will allow you to wire a 1995-1996 SR20DET S14 blacktop (WC ecu, black or red sticker) To a 1995/1996 240sx. The wiring for a 96 240sx is different than a 95 wiring, however, my 96's only differences were not important in the wiring so i wired it like a 95. 1995 sr to 1995 240sx, S14 blacktop w/ vtc. This is just the F3 plug wiring. you still need to lengthen the maf wire, o2 wire, and some other misc bullshit. The only diagrams I used to make this paper were my S14Pinout-Colors.jpg, which matched my KA harness pinout (verified before starting) and my SR20 ECU pinout XLS file on my website. l/y = wiper switch is present on s14 sr harness pin 47 moved to pin 27 moved black/red from left to right 9 to 1 moved blue/red (defroster) present in sr moved to pin 3 from i think 12 took pins 10 and 11 from ka harness and put into sr harness same places (empty in sr harness) took pin 16 from ka and put into 16 in sr harness moved pin 25 from ka to sr harness it was empty in sr harness cooling fan oraNGE BLUE ON sr harness in pin 37 is for the low cooling fan relay, so pulled it out and soldered it to pin 41 on the sr harness, which is green/black useless. So sr pin 37 solder to pin 41. lose wire from 41. 37 also is no longer needed (empty) the other orange blue wire at pin ?? is the start wire. find the s14 ecu pinout and follow the start signal wire to the f3 plug. its orange blue. that wire gets pulled out, and soldered to pin 34 in the sr f3 plug. thats your start signal. it might need to be pinned in using the orange wire off the ka harness i did do that. the blue/red from pin 27 on thye sr harness goes to: no where? I cut it and soldered the blue/yellow wire (wiper intermitten switch) to the bluered at pin 27. I moved the blue/red from 27 to no where? tied black pink (pinned in from ka) and yellow/black (pinned in from ka) together. this turns on a/c yank the black/yellow from pin 35 on the sr harness. thats your fuel pump relay wire. Tie it to the black/pink wire you pinned in at pin 11 on the sr harness. Find the brown wire (sr harnes) around pin 20~. Pull it out. Find the black/yellow wire (sr harness) in pin 18. pull it out. Install the just removed brown wire into pin 18. this is your o2 sensor 12v. The black/yellow wire you removed from pin 18, is your IACV wire (sr harness) I tested myself with a multi. Tie it to your already pinned in black/yellow at pin 10 (sr harness) Pin 21 (sr harness) is orange. Thats your MIL wire. Movve it to pin 30 (sr harness) there you go working MIL. pin 24 is red (sr harness) thats your "thermisistor control aplifier" whatever pull it out. Pin 26 (sr) is green/white. Pin 46 (sr) is blue/black. Thats your tachometer signal. It goes to pin 26. Pull the g/w from 26 out and replace it with the pin 46, blue/black. pin 45 (sr) is yellow. its your temp gauge. move it to pin 28 (sr). multi verified to the harness. pin 29 (sr) is green/orange. this is your neutral switch wire verified to pinout. move it to pin 40. at 40 you will find a wire g/y, this is your "ac relay" wire. clear out pins 39 to 35 jus tin case. remove them. sr harnes. now move the purple wire from pin 48 (Sr harness) to pin 42. thats for your wiper. not power steering. move pin 44 (sr) yellow/green to pin 24 (empty now) thats your speedo wire. The pin 44 that used to be y/g should be for some IACV shit. but i dunno what. "FICD?" it says. This could be incomplete beware.

03-06-2016, 08:51 AM	#8
carlosj812 Join Date: Mar 2016 Location: maryland Age: 33 Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	ok this is nice but I have 2 questions, first one do I have to wire or splice anything on the ecu plug on the sr and second I have another white plug smaller than the dash plug in the sr harness do I have to wire that too. I know you probably get that question a lot this is the first time I find a thread on s14 sr swap on s14 ka thank you.

03-06-2016, 05:03 PM	#10
carlosj812 Join Date: Mar 2016 Location: maryland Age: 33 Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	Ok thanx man and yeah every single thread ive seen i never saw another white plug in there s14 harness the plug is located next to the f3 plug. Also i used the ka lower harness but the plug for the oil pressure switch is different, can i use the ka oil pressure switch?.