RB25det s2 connector plugs

Discuss the RB20, RB25 and RB26 series engines.
nyc240sx
Posts: 446
Joined: Wed Sep 19, 2007 9:53 pm
Car: 1995 Nissan 240SX SE
RB25DET series 2

Post

need some help with these plugs i dont know where they suppposed to be connected to its a rb25 into s14 swap. thanks for help

Modified by nyc240sx at 6:02 PM 11/25/2008

Modified by nyc240sx at 6:04 PM 11/25/2008

Modified by nyc240sx at 6:05 PM 11/25/2008

Modified by nyc240sx at 6:05 PM 11/25/2008

Modified by nyc240sx at 11:32 PM 11/25/2008
Modified by nyc240sx at 1:44 AM 11/27/2008


nyc240sx
Posts: 446
Joined: Wed Sep 19, 2007 9:53 pm
Car: 1995 Nissan 240SX SE
RB25DET series 2

Post

i figured out the 2, 3, and 4 plugs in the pics so all i have left is these connectors unconnected.. anybody?

User avatar
tight240
Posts: 298
Joined: Mon Jul 05, 2004 3:12 am

Post

The number 1 plug goes to your air regulator, it sits underneath and between the intake mani. You cant miss it, helps with Idling.

nyc240sx
Posts: 446
Joined: Wed Sep 19, 2007 9:53 pm
Car: 1995 Nissan 240SX SE
RB25DET series 2

Post

ok thanks

wawazat8402
Posts: 578
Joined: Sun Sep 26, 2004 10:08 am
Car: 89 Sil80- RB25DET

Post

Pic 6 looks like the plug for the boost solenoid.

Pic 7, IIRC, g/o is for the neutral switch. Is it coming off the transmission?

nyc240sx
Posts: 446
Joined: Wed Sep 19, 2007 9:53 pm
Car: 1995 Nissan 240SX SE
RB25DET series 2

Post

ok so what do i have to do with the boost solenoid plug "pic 6"since i dont have it on my motorset can i leave it unplugged?

that green orange wire is coming out of my rb25det into s14 harness so i guess i'll have to splice the neutral switch on the transmission and run one of the wires to this g/o wire.

nyc240sx
Posts: 446
Joined: Wed Sep 19, 2007 9:53 pm
Car: 1995 Nissan 240SX SE
RB25DET series 2

Post

i found out where most of the connectors go to but i have one more which i forgot to take a picture of i will post it up later today

wawazat8402
Posts: 578
Joined: Sun Sep 26, 2004 10:08 am
Car: 89 Sil80- RB25DET

Post

i believe the boost solenoid needs to be hooked up. to verify the g/o wire, find the pin on the ecu and do a continuity test between the pin and the exposed end.

nyc240sx
Posts: 446
Joined: Wed Sep 19, 2007 9:53 pm
Car: 1995 Nissan 240SX SE
RB25DET series 2

Post

yea i found out that you dont need the boost solenoid hooked up run the vacuum from the wastegate to the vacuum on the im and it'll run at stock boost 7psi...The green and orange wire is neutral position switch i have a diagram for the ecu connector harness

nyc240sx
Posts: 446
Joined: Wed Sep 19, 2007 9:53 pm
Car: 1995 Nissan 240SX SE
RB25DET series 2

Post

heres the pic to the last connector looks like it connects to something near the firewall..anyone?

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another pic of it<br/>

imotion s14
Posts: 142
Joined: Sat Dec 29, 2007 11:49 am
Car: 1997 240SX

Post

it's either your coil packs or your wiper motor.

wawazat8402
Posts: 578
Joined: Sun Sep 26, 2004 10:08 am
Car: 89 Sil80- RB25DET

Post

Its not enough wires for the coilpack plug, which is black. You can see the coilpack subharness farther down in the pic with the white test loop on it.

nyc240sx
Posts: 446
Joined: Wed Sep 19, 2007 9:53 pm
Car: 1995 Nissan 240SX SE
RB25DET series 2

Post

so it must be the wiper motor but i didnt find anything for this connector it must be hidden


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