View Full Version : WIRING diagrams NEED!!! usdm 240sx s13 / s14 sr20det

02-14-2008, 04:14 PM
I am trying to complete my swap and i'm kind of stuck with the wiring harness :wtc: please help me, i'm a n00b trying to get a s14 sr20det motor into a 240sx fastback, but the wiring harness is already wired to go into a usdm s14. so i got a s13 wire harness and need to get my baby running. HELP:aw: please all input is welcome. thanks

02-14-2008, 09:57 PM
why did someone give me neg rep for this post?

02-14-2008, 10:02 PM
is your ecu a WC or NA =]

either way , easy :P

02-14-2008, 10:22 PM
the ecu is a NA

02-15-2008, 06:06 AM

i just helped someone with this over a PM.

ALL your wiring is done at the S14 F3 harness (it's that blue plug that's next to the ECU plug on the harness)

Get the s13 harness from the car, cut the brown and gray plug that plugs into the battery area; as far as you can. You need to run these wires to the F3 plug. you need a long lenght of wires on these plugs. runs from the ECU area to the battery area. that's why i mean cut it as far as you can OFF the KA harness

Now cut the s13 interior plug off the KA harness, that gets wired into the F3 plug.

Cut off the wipper and amp plugs from the harness. it's not needed.

that's pretty much it. btw, that F3 plugs gets pluged into NOTHING. you're basically tapping wires to it.

02-15-2008, 07:58 AM
when i say "easy" it means i can do it for u...but moderators or sponsors who pay the forum to advertise and solicit work, have the freedom to solicit your business openly. where as i don't have the open liberty to step on people's toes or undercut them from making a living....
Dave =]