14-10-2006, 04:09
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Back Seat Chatter!
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Join Date: Oct 2005
Posts: 58
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this was posted by Sam on club-s12 and we both need help.
If somebody could provide us with a pinout instead of colours, that would be very much appreciated.
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ok, here is the deal. Indy pmed me today asking me about the white plug that comes off of the 18det harness near the plug for the ecu itself. I went back using the old original write ups colors of what should be coming off of the white plug, wrote down what came off of my white plug...and here is where we have an obvious problem. Now I am thinking that what isnt off of the white plug must be spliced into off of the ecu plug itself...anyways, if anyone actually knows what is supposed to be done, that would be nice....cuz i am kind of speculating at this point. Anyways, here is the original pm convo with indy and I Including the wire colors of what is on my plug, what should be on my plug, and pics of everything.
Ok, here is what I did, I went from the top row left to right and grabbed the colors off of every wire and this is what I came up with...let me know if you have the same.
note the indenture for the plug is the top...
grey/blue stripe
green wire
blue/red stripe which is the main ignition, but it doesnt combine with another wire like the original write up said it did.
blue
orange
black, slightly larger gauge wire
black, it maybe possible ecu power...
there is 2 silver like stirpes near my finger, and the ecu power is supposed to be black/white striped
blue/silver stripe
yellow/green stripe-ac relay
grey/red stripe
red-ecu power back up
light green
black (again possible ecu power, has the same stripes on it)
white
blue/black stripe
yellow/red stripe
for more reference...here is what the original write up said should be there...
Black / Pink stripe
Fuel Pump Relay
missing in action from our plugs
Green / Orange stripe
Transmission Neutral Sensor
mia from our plugs
Red / Black stripe
ECU Relay
mia from our plugs
Green / Yellow stripe
AC Relay
mia from our plugs....but who needs ac?
Red
ECU Backup Power
mia from our plugs
Black / Red & Blue / Red (Note: connect 2 wires to 1)
Main Ignition Power
i didnt see it combine anywhere...but maybe your supposed to combine them? if so which black do you combine it with?
Black / White stripe
ECU Power
2 possible wires, but i am not sure which, or if they are possibles
Blue / Green stripe
AC Relay
mia from our plugs
Black / Yellow stripe
Idle Air Control Valve Power
mia from our plugs
Brown (to O2 sensor)
O2 Sensor Power
Any 12v switched source
I didnt see a brown wire anywhere near my plug
I am prolly going to post this onto the 18det tech forum and see if we can get any response from anyone there....I am thinking tho that what isnt on the white plug has to be pulled off of the ecu plug, but i could be wrong.
Indy
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it's not the ECCS connector though. It's the white plug beside it. I havne't found a pinout for that yet.
ME
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Actually, when i first started looking at my harness the colors people gave didnt match up either. I am thinkin that tho if your colors dont match use the ecu pinout and forget the colors. I am thinking its possible that nissan changed harness wire colors on some of the 18dets. That would atleast explain why yours and mine colors dont match anyone elses. The ecu pinout should be the same tho. Anyways, let me know how that works out.
Indy
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hey sam, I was gonna wire up my car today but ran into some problems.
The wire colours for the white plug on my ca18det harness dont' match up to the ones everybody is using for some reason.
The main ones I'm concerned about are:
ECCS Relay
ECCS backup power
Main Ign power
ECCS power
O2 sensor power wire
The others like Tach and Temp and start signal are there though.
Anyways, you said yours matched up right? Could you do me a huge favour and tell me which wires are which on the plug? Like just let me know like...
"Looking from the back(where the wires go INTO the plug) the ECCS relay wire is on the top row, third from the left."
If you could tell me which ones they are that'd help me so much man. And also, just in case, could you confirm at least the start signal wire as well? the others that are "there" aren't as important as the start signal, and I wanna make sure that's the right one.
If you could do that for me, I'd owe you a big one.
~Tim
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