SR20DET wiring main ing pwr, 02 sensor pwr, and coil pack pwr

[Row]

I ran into some confusion when i was soldering the Black/red stripe wire, Blue/red stripe wire and the brown wire. FRsport notes that these three wires should be soldered together.
SR20DET Swap Engine Harness Wiring Diagram Guide SR SR20 (http://www.frsport.com/SR20DET-Swap-Engine-Harness-Wiring-Diagram-Guide-SR-SR20_t_26.html)
I followed the write up they have, but i just want to verify with the zilvia community if i did this soldering part correctly.

I'm a bit skeptical because that's alot of current flowing through these wires


http://i263.photobucket.com/albums/ii131/RG-S13/SDC10814.jpg

[tsanumei4321]

i just did the same a few hours ago seriously imma check it later though, should be ok

[GSXRJJordan]

Yup, they're all switched +12V. Make sure you've got at least 10A on it though, cause the ECU/sensors/ignitier/coilpacks pull about 8A at full tilt.

If you have any wiring questions, shoot me a PM, I pwn harnesses all day long :)

[gnxregal]

I noticed on my SR Harness there were two blue / red stripe. One wire is larger than the other. Do all of these wires go together with the red / black?

[GSXRJJordan]

^^^ Yup, I believe so. I'd have to know where they're going to tell you for sure, but it sounds right.

[slociv]

If your talking s13, the front plug behind the passenger headlight then no. The thick blue/red and the thick Black/red both go to the thick black/red. I think it was black red, either way the three thickest wires. The thin blue.red goes to the other thin blue red.

[GSXRJJordan]

They're all ignition switched +12v - black/red is black/white elsewhere, and actually goes to the switch (and is fused by the green 30amp fusible link), blue/red is coilpack power, fused separately at 10amp.

[corey240]

I have a question pertaining to this. I am switching my harness from s14 to s13. I found and followed the black/red wire in the s14. I CANNOT find the same wire in the dash harness on the s13. Where is the end of it that connects to the black/red wire in the sr harness?

[GSXRJJordan]

I have a question pertaining to this. I am switching my harness from s14 to s13. I found and followed the black/red wire in the s14. I CANNOT find the same wire in the dash harness on the s13. Where is the end of it that connects to the black/red wire in the sr harness?

Good question! There are a few things different between the s13 and s14 body harnesses... First of all, the s14 feeds ignition-switched +12v to the ECU harness via a single black/red wire - the s14 engine harness then splits this everywhere it needs to. Constant +12v is supplied by a small red wire with a silver hash mark on it, and feeds the ECU relay (which allows the ecu to turn itself on and off). If you're using a s13 harness in an s14, you don't necessaily have to wire in a relay, you can just take all the leads from the s13 power plugs back through the firewall and connect them to the proper wires on the s14 power plug (m63/f3 in the fsm). Not all the wire colors match though, and you'll have to save the wiper wiring from the s14 engine harness if you want your wipers to work.

[corey240]

What I dont understand is where the wire connects to now. I removed my s13 sr engine harness from my s14 chassis. Now in the s13 chassis. I cant seem to figure out where the ignition power wire connects in the s13 chassis. I guess theres supposed to be a plug from the s13 dash harness that the engine harness connects to near the ecu. Mine was cut out. So now I have to hard wire the harnesses together, not a problem, except, I cannot find this one wire not can I figure out what wire it goes to.

I mean, it says to connect it to the black with red wire in the harness, but I dont have it. My car is caged and I cut the dash out today and opened the harness to still no find it leading to the passenger side. I followed for reference in my s14. Am I missing somthing? I cant get a usuable s13 fsm link ANYWHERE so im stumped on this now. In the S14 thes 2 wires were just connnected via a locking type plug. I had to cut that plug off the sr harness to switch them over when I saw it wasnt the same in the new car.