My injector harness was cut, and my fuel rail and injectors were stolen awhile ago. I had to have my new RC injectors spliced into the harness. I wasnt familiar with that process so I had a shop do it and worked fine. Now I have sold the RC injectors and had to cut the harness again. Since Im putting back the stock injectors, I got a question. Each injector has 2 wires. One of those wires is the same for each injector, yellow with a black stripe, Im guessing thats a negative feed. The other wires are color coded and each injector has a different color. I know the colored wires help indicate injector 1, 2, 3, and 4. But how do I know which yellow with stripe wire goes with which injector? Or does it even matter?

 

Which ground goes where, probably doesn't matter. (EDIT: Ohm meter between each of the "grounds" would give you some peace of mind, should be ~0 ohms )

Mine are
#1- Tan
#2- Red
#3- Blue
#4- Yellow

With a yellow/black stripe going to each.

-Chris

 

thanks yeah I know the colors for each injector, its the black/yellow wire Im worried about. I tried to trace it back through the harness to see if maybe each of the black/yellow wires was connected to a colored wire but they appear to be separate all the way back into the main harness. Im beginning to think it doesnt matter but not sure

 

I know someone knows for sure...

 

All your base are belong to multimeter.
http://www.hondata.com/techinjectorwiring.html

Yellow/Black is 12+ ignition switched common bus.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ccfries &raquo;</TD></TR><TR><TD CLASS="quote">All your base are belong to multimeter.
http://www.hondata.com/techinjectorwiring.html

Yellow/Black is 12+ ignition switched common bus.</TD></TR></TABLE>

Thanks, so that means it doesnt matter since they are all coming from the same source? Im not an electrician but I know enough where I can wire this up myself as long as know what goes where.

edit: that diagram pretty much explains it, I guess we'll see if it works

 

if i'm not mistaken the yellow/black wire is the positive/feed wire. then the colored wires are ground controled by your ecu. if you get a used clips you should be able to match the color with the wires.

 

no, I think youre missing the point. I know where the colored wires go. But because each injector clip has a yellow/black wire, I dont know if it matters which yellow/black wire goes to which injector. It looks like it doesnt really matter but Im not 100% yet. If they all feed from the same source then I wouldnt think it would matter, unless signal is sent to each injector separately, then I would have to make sure the right yellow/black wire is connected to the right injector.

 

afaik yellow/black wire are all fed from one source and should not really mater which one they go back to.
i think at one point i have mixed afew of them up and nothing bad happened

 

Where do you wire the 5th injector? You know, the one you put in your tailpipe for the batman flamethrower effect?

-Chris

Edit: not even I know why I posted this here. Happy Tuesday!

 

up...need to rewire these, someone here has to know for sure.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RTW DC2 &raquo;</TD></TR><TR><TD CLASS="quote">up...need to rewire these, someone here has to know for sure. </TD></TR></TABLE>

Dude, Hondata says they're a common 12V bus, and I believe them.
http://www.hondata.com/techinjectorwiring.html

 

by "common 12V bus", i know that means its coming from the same source. but is it a switched source where it has to be in synch with each injector? if thats the case, then it matters. otherwise it shouldnt.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RTW DC2 &raquo;</TD></TR><TR><TD CLASS="quote">by "common 12V bus", i know that means its coming from the same source. but is it a switched source where it has to be in synch with each injector? if thats the case, then it matters. otherwise it shouldnt. </TD></TR></TABLE>

It says it's ignition switched, which means they're all turned on when the key is on. I don't think they'd leave out such a big detail like a whole second set of switches... plus the ground side (color coded) is switched.

 

does not matter which wire(yellow/black) goes towhich injectors. they come from the same power source and they have 12v as soon as you turn your key on. the color coded (yellow,blue,red,brown) are the ones that need to to the right injectors.

i know this cause i had tore-wire a theft recover car, which they cut the wire for the injector.

 

ok im gonna go with what you guys say. it makes sense and is logical, but i just wanted to hear it from others as well. as long as i get the color coded wires right then it should be fine.

 

all the yel/black merge together anyway.

they simply need switched power.

 

3 of my injectors aren't spraying gas. Could it be i wired the injector clips incorrectly (wrong polarity?) if so that means i ran on one cylinder for about 5 minutes -_-

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ev0luti0n &raquo;</TD></TR><TR><TD CLASS="quote">3 of my injectors aren't spraying gas. Could it be i wired the injector clips incorrectly (wrong polarity?) if so that means i ran on one cylinder for about 5 minutes -_-</TD></TR></TABLE>

holy ****, back from the dead.

but yes, you probably wired them up wrong. +12v power comes in on the yel/blk, then each of the color coded wires is the ecu controlled ground driver circuit for the injector. Use service manual to find out which color is which cyl. I'm too lazy to look it up.

 

I didn't think polarity was important, but I could be wrong. Good luck.

 

^ need to know