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Chris Rummel's easy follow RB into Z wireing guide

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#161 240zzzap


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Posted 18 May 2013 - 09:04 AM

Is this wiring setup similar for the RB20?

There are a few similarities but wiring the 20 is supposedly a bit easier - http://forums.hybrid...-z/#entry860349. Links to ref. material are outdated tho'...



#162 rayaapp2



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Posted 17 December 2013 - 03:01 PM



Here goes

I have a 2000 RB25det.

I removed the ATTESA system. I cut it out and removed the wires going to the ECU. There are a small bundle of them and a relay. If your not keeping it and you probably wont for a Z, cut or tuck.


Pin 5    GRY/RED Start Signal

Pin 17  GRY?BLU MIL to 12V switched on a 10A fuse

Pin 20  GRN/ORG IGN Switch 12V

Pin 24  BLK/PNK FP Signal to 12V on the other side of the Relay(was not integrated into the EFI harness

PIN 31  WHT/BLUE IGN Switch 12V



Pin 6 WHT/GRN B+ 12V

Pin 1&3 WHT/BLK B+ 12V


They should all have 10A fuses to each power lead according to the FSM. The Start signal should have a 10A fuse as well!


I am running!



I missed 1 wire that is critical.

In the bundle of wires with the big white connector near the Relay packs there is a solid BROWN wire. This is the POWER wire for the IAC and the VCT! I was up and running without this and it took me until today(nearly a month later) to realize I had no VCT, but I also only drove it a handful of times. I then re-adjusted my idle and TPS and I am off and running.

Edited by rayaapp2, 28 January 2014 - 10:29 AM.

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#163 ZT-R


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Posted 29 December 2013 - 05:17 AM

I have a .4 amp draw on the alternator, does anyone else have this problem? I have tried 3 other alternators. I used the diode as mentioned in this thread, do i need a bigger one? I am using a Quest 125 amp, or whatever it is i cant remember.

<p>72 240z R.I.P.S. Forged RB30/26DET, BW 9174EFR, Series 2 AEM EMS , Endyn Pro Head, R.I.P.S. Intake Manifold & 90mm TB, R230 Rear End, T3 Suspension, ect...My Build Thread

#164 Crayzrb



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Posted 27 June 2015 - 08:01 PM

My rb harness only has 1 relay in it is this normal?

#165 mizle



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Posted 29 December 2015 - 06:38 PM

I can't wait to swap an RB into my Z! Awesome right up

#166 Ba280z



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Posted 04 March 2016 - 01:54 PM

is this thread still going I need help with wiring. I have a rb20det swap, and harness and ecu are different then everyone elses ive seen. the pin out on ecu are different and so is the wiring. it has 4 separate plugs for the ecu instead of the block that bolts in. just trying to figure out the wiring I need. if anyone is familiar with this some help would be great!

#167 Wizzurp


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Posted 04 March 2016 - 02:27 PM

You want this guide, it's much more helpful if youve got a 20




I used that as a mini guide (with some changes) for mine and it was quite good. I had mine wired in like 20 minutes.

#168 Ba280z



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Posted 02 April 2016 - 02:27 PM

Need help. I'm trying to locate the wires on the same loom as my afm. This is the only plug I have and not sure which need constant and switched power.

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