??? sohc to dohc wiring

[coupe13]

i have an 89 240 coupe. the car has a dohc motor swap ,and ecu with it. im missing the under dash wiring harness. what wiring harness do i use.
? on the wires i need to swap and info would help please?

[Phlip]

did we search?

[coupe13]

i dont know what to search for

[Phlip]

Personally, I started here:
http://www.zilvia.net/f/showthread.php?t=33502
(that was your easily-located freebie, thank Absolut vodka, bedtime is coming soon)

... now for the small variables, I searched "DOHC swap" and similar terms and read EVERY thread until I found my answers... I didn't have to do much searching, it is oft-discussed around here, especially in the last few months

[coupe13]

help i found the stock wiring harness for under the dash. but i cant find the s14 ecu wires i need to connect it. help help help help

[orion::S14]

No, no, no...

Don't try to use the S14 wiring harness and ECU...that's makes it 200 times more difficult.

Find an S13 harness and ECU...plug and play under the hood, and splice 8 wires under the dash (color for color, leave 3 disconnected). Super Easy.

- Brian

[coupe13]

i already have the ecu and wiring harness from the s14. and installed. the question is do i leave the s13 ecu wires there and run the s14 ecu.

[sLip techniques]

I searched "DOHC swap" and similar terms and read EVERY thread until I found my answers...

i cant believe you did that

[projectRDM]

Holy shit. You are the worst fucking reader ever.

S13 ECU and harness. Plugs right in outside, a few repins inside.

Or S14 ECU and harness, extensive rewiring, pinning, extending all ECCS plug connectors, removal of wiper wiring, etc, etc.

If you can't even follow these simple instructions on this forum then there's no way in hell you'll ever get the car running.

[coupe13]

no no i have evey thing wired right i just have an extra plug that sits in the ecu area and it is a bit smaller than a s13 and s14 ecu plugins i want to know what the hell it is??

it is same color (lite blue & white top) as ecu plugins????

[projectRDM]

Was the car auto? Or did it have cruise? Plug for one of those maybe.

[Phlip]

i cant believe you did that
How many new threads did you see me create outside of off topic?

[coupe13]

it could not be one of those. there are like 20-35 wires coming out of it that go to the engine bay. it looks like you would plug it into an ecu but it is to small. ?????

[coupe13]

ok every thing is kool. i have wired the s14 engine harness into the s13 dash harness. the question is there is a white plug (next to the ecu) is of the engine harrness and (and of the plug the comes out of the fire wall, two black plugs plug into the ignition box) on white plug that comes of the light harness,. the are diffrent sizes what do i do. help

[mrmephistopheles]

Tool, stop hitting the 'create new thread' button, or I'll take it away from you.

[coupe13]

hey on the post u di about the soch to doch swap did u come across this problem

http://x-zost.graphic-content.net/media/240sx/240-wiring-001.jpg

[mrmephistopheles]

hey on the post u di about the SOHC to DOHC swap did u come across this problem


Negatron, because (as I stated in that thread) I used all S13 DOHC electrical components (ECU/engine harness/MAF, etc) on the S14 motor. Getting it to work in the SOHC chassis was a snap.

[coupe13]

does it run like it is suposed to i did what you said with the ecu and that worked just fine.

[Phlip]

Mine runs like it is supposed to based upon what he wrote in that thread

[mrmephistopheles]

does it run like it is suposed to i did what you said with the ecu and that worked just fine.

While I had that motor in the car (before changing to SR), it ran perfectly.
What do you mean 'what you said with the ecu'?

[coupe13]

ok that is al right but what do i do about the pic above that is what is holding me back