DOHC Swap? Body/Engine Harness Connector - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

nismoman91 · 08-24-2005, 11:36 PM

Well im in the middle of a DOHC swap into my 90 hatch and the motor is in and im strating to run the harness now. Now my question is, as posted on Zilvias DOHC swap guide there is this point near the bottom:

"Locate the body harness (under dash harness that attached to the ECU) that attached to your old harness. Cut the old connector off (the one that attached to your SOHC harness) and attach your DOHC body harness connector. Just match the colors! There will be some wires left over. These are for the SOHC's diagnostic plug, and are unnecessary. Please note: Your car will NOT be able to hook up to a CONSULT tool. To accomplish this, you must get a body harness with all the correct DOHC wiring. This is why we cut the body harness connector off, and not the engine harness connector."

Now I went to the wrecker today and got the ECU connector and a different one. Which one is the correct one I need to wire in? Or did I fail misserably and neither are right?

Thanks for the help.

**mrmephistopheles** · 08-25-2005, 12:01 AM

omg wtf bbq.

the piece of harness with the blue connector is the engine harness and the little brown guy on top is the body harness connector. You REALLY don't want to have to rewire that harness end onto a same engine harness. Too much of a pain. Go get a full uncut harness.

That brown end is the one in question. You can cut that end off and wire on the other connector from the other harness, or vice-versa. I chose to wire a DOHC end onto the SOHC body harness. Hell if you really wanted to, you could hard-wire it, but I chose not to, so an engine swap to something else in the future would be a snap.
I'm glad I did so, because less than a year later, I swapped an SR in and didn't have to mess with that wiring.

As for the white connector, I'm not sure what it is.
Maybe that's the connector for the 'break down for no reason and/or have electrical problems' controller box. That one is vital for any S13 to run (or not run, as the case may be).

BDFNRA/OHEP controller boxes RULE.

nismoman91 · 08-25-2005, 12:26 AM

Ok awesome yeah this shit was just off some junker so it doesnt matter so the brown one is the one I need alright thanks alot.

08-24-2005, 11:36 PM	#1
nismoman91 Join Date: May 2005 Location: Winnipeg Posts: 19 Trader Rating: (0) Feedback Score: 0 reviews	DOHC Swap? Body/Engine Harness Connector Well im in the middle of a DOHC swap into my 90 hatch and the motor is in and im strating to run the harness now. Now my question is, as posted on Zilvias DOHC swap guide there is this point near the bottom: "Locate the body harness (under dash harness that attached to the ECU) that attached to your old harness. Cut the old connector off (the one that attached to your SOHC harness) and attach your DOHC body harness connector. Just match the colors! There will be some wires left over. These are for the SOHC's diagnostic plug, and are unnecessary. Please note: Your car will NOT be able to hook up to a CONSULT tool. To accomplish this, you must get a body harness with all the correct DOHC wiring. This is why we cut the body harness connector off, and not the engine harness connector." Now I went to the wrecker today and got the ECU connector and a different one. Which one is the correct one I need to wire in? Or did I fail misserably and neither are right? Thanks for the help.

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08-25-2005, 12:26 AM	#3
nismoman91 Join Date: May 2005 Location: Winnipeg Posts: 19 Trader Rating: (0) Feedback Score: 0 reviews	Ok awesome yeah this shit was just off some junker so it doesnt matter so the brown one is the one I need alright thanks alot.