RB25 lower harness for S14 Auto to Manual - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

GT240R · 01-20-2009, 03:48 PM

I am currently working on swaping in an RB25DET into my 98 base model S14, but am converting from auto to manual. I have been searching and can't find anything, do I need the lower harness off a manual 240, or can I convert mine to make it work? I did find a link to rb25.org or something, but the link says that it's not working any more. Any help would be appreciated.

codunc · 01-20-2009, 04:23 PM

racebread.com had a rb25 lower harness guide but their site is down

GT240R · 01-20-2009, 04:33 PM

Quote:

Originally Posted by codunc

racebread.com had a rb25 lower harness guide but their site is down

Yep it was racebread, but no more site. Anyone?

karl wasabi · 01-20-2009, 04:53 PM

PM Bardabe here on zilvia. He might be able to help you out. He converted my lower harness for me.

GT240R · 01-21-2009, 05:19 PM

Quote:

Originally Posted by karl wasabi

PM Bardabe here on zilvia. He might be able to help you out. He converted my lower harness for me.

Thanks but he hasn't replied and I need some help. Anybody?

projectRDM · 01-21-2009, 06:19 PM

It's the same as doing any engine swap, whether it's a DOHC KA, SR, RB. Your lower harness has all that you need already in it, a manual lower harness is useless since the wiring you're looking to add doesn't exist in the chassis. The lower harness question has become a broken record, it's really sad.
Hook up the alternator and starter just as they were originally. Run the VSS as it sits by unwrapping it from the harness, it's a separate section. Hardwire reverse lights if you want them, throw the rest of the harness away. Done.

GT240R · 01-21-2009, 07:09 PM

Quote:

Originally Posted by projectRDM

It's the same as doing any engine swap, whether it's a DOHC KA, SR, RB. Your lower harness has all that you need already in it, a manual lower harness is useless since the wiring you're looking to add doesn't exist in the chassis. The lower harness question has become a broken record, it's really sad.
Hook up the alternator and starter just as they were originally. Run the VSS as it sits by unwrapping it from the harness, it's a separate section. Hardwire reverse lights if you want them, throw the rest of the harness away. Done.

The reason I ask is because I found this link for an S13 lower harness and wanted to know the difference for the S14, and the fact that I had a auto tranny and will now have the RB25DET 5 speed tranny.

Thanks though.

projectRDM · 01-21-2009, 07:47 PM

Quote:

Originally Posted by GT240R

The reason I ask is because I found this link for an S13 lower harness and wanted to know the difference for the S14, and the fact that I had a auto tranny and will now have the RB25DET 5 speed tranny.

Thanks though.

13 and 14 are very different, but none of that matters. Just follow the guidelines for a 5spd swap using your auto harness, once you unwrap the entire thing you'll see the VSS is separate and can be run on it's own, and the starter and alternator will plug right in. All the rest is trash.

opponheimer · 01-22-2009, 07:43 AM

hey kid email me at [email protected] and i'lll send you a writeup for the lower harness

01-20-2009, 03:48 PM	#1
GT240R Zilvia Junkie Join Date: Oct 2007 Location: Del Rio, Texas Posts: 400 Trader Rating: (14) Feedback Score: 14 reviews	RB25 lower harness for S14 Auto to Manual I am currently working on swaping in an RB25DET into my 98 base model S14, but am converting from auto to manual. I have been searching and can't find anything, do I need the lower harness off a manual 240, or can I convert mine to make it work? I did find a link to rb25.org or something, but the link says that it's not working any more. Any help would be appreciated.

01-20-2009, 04:53 PM	#4
karl wasabi Post Whore! Join Date: Dec 2006 Location: Walnut/SoCal Posts: 3,898 Trader Rating: (41) Feedback Score: 41 reviews	PM Bardabe here on zilvia. He might be able to help you out. He converted my lower harness for me. __________________ Karl Wasabi Private Seller - Review Thread

01-21-2009, 06:19 PM	#6
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 50 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	It's the same as doing any engine swap, whether it's a DOHC KA, SR, RB. Your lower harness has all that you need already in it, a manual lower harness is useless since the wiring you're looking to add doesn't exist in the chassis. The lower harness question has become a broken record, it's really sad. Hook up the alternator and starter just as they were originally. Run the VSS as it sits by unwrapping it from the harness, it's a separate section. Hardwire reverse lights if you want them, throw the rest of the harness away. Done. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

01-20-2009, 04:23 PM	#2
codunc Zilvia Junkie Join Date: Sep 2006 Location: Denver, CO Age: 34 Posts: 316 Trader Rating: (2) Feedback Score: 2 reviews	racebread.com had a rb25 lower harness guide but their site is down

01-22-2009, 07:43 AM	#9
opponheimer Zilvia FREAK! Join Date: Apr 2007 Location: Bikini Atoll Posts: 1,267 Trader Rating: (3) Feedback Score: 3 reviews	hey kid email me at [email protected] and i'lll send you a writeup for the lower harness