there is a blue connector that comes from the engine harness and there is a blue connector that comes from the dash by the ecu but they dont fit each other < what do these blue connectors due and will they make my car not start, because it doesn't?

 

Your car is an Automatic - correct ? I believe the connector you are referring to is X05 and yes it will not start without it. When you turn the key..nothing - correct?

You have already posted once, now again. You want help. Well you need to give us some more information, answer the following

1. Prior to the car NOT running, what has changed ?
2. Take a picture ( good clear pic - no cell phone ) and what you are trying to couple up on connectors.
3. Take a wire count of the dash side connector and a wire count of the engine side connector.


Right now it sounds like you have an automatic dash harness with a manual engine harness. But I do not have enough info yet.

So if you want help.....


Later

 

No my car is manual and the engine cranks over but wont start, at first i thought it was flooded so i took the plugs out and there was no fuel on them at all, so i think my injectors dont have power. As for taking a picture i dont have a camera available yet but will post a pic as soon as i get one. The connector from the dash has 10 wires going to the connector and the one from the engine harness has 11 with one empty port in the blue connector.

 

Another thing that i dont understand is if the connectors are for the tranny why do my reverse lights turn on when i put it in reverse?

 

This picture isnt from my car but i circled the wire and connectors that go nowhere on the car in red < hope this helps a little

http://img210.imageshack.us/my.php?image=3plugsdzk2.gif

 

The blue connector has to be X-05 and it carries all of your power to the Injectors and every solenoid on the engine.

Good news - We are finally on to solving your problem.

Bad new - Your car is not going anywhere !


A camera would help you, might be a good investment in the future over lack of FD knowledge and experience.



If you want get a good description of each wire color ( example - B/W ( stands for black with white stripe). On each of the blue connectors that you are trying to mesh together.



Later

 

On all of my Auto conversion the X-05 connectors carries the Starter cut relay wiring, but the manual harness has it in another connector. This is why I thought you had a "nothing on key-on" .

Anyway X-05 on a manual car still carries the following.


Solenoid Valve power
Injector power
boost signal
1/2 switch
neutral switch
You're screwed


LAter

 

Confirmed - that connector circled is the engine side of X-05. It is waiting for another connector to plug into it and talk with it. I know that is what you've been trying to do, but I do not understand the 10 wires/11 wires. Both connectors would have 10 wires.

LAter

 

That is because that circuit goes thru a white connector X-14 and it is not comprimised right now.

It should be mandatory before anyone even thinks about buying an FD that they should pass a course in reading and understanding the shop manual for a Mazda Rx7 3rd generation.....especially the wiring

Later

 

ok so it does power the important stuff! So how do i solve this, should i see if there is a connector from a different Mazda at the junkyard that fits, or just match the colored wires and connect them together.

 

here are the wire colors

Dash Harness:

color - strip

1.Black - Blue
2.Brown - none
3.red - none
4.brown - black
5.black - white
6.white - blue
7.black - yellow
8.yellow - none
9.brown - white
10.black - green

Engine harness:

1.black - blue
2.brown - none
3.brown - black
4.red - none
5.yellow - none
6.black - white
7.brown - yellow
8.black - yellow
9.white - blue
10.brown - white
11.black - green


So the extra one on the engine harness that has nowhere to go is Brown and yellow

 

Dash Harness:

color - strip

1.Black - Blue
2.Brown - none
3.red - none
4.brown - black
5.black - white
6.white - blue
7.black - yellow
8.yellow - none
9.brown - white
10.black - green


this should be coming in from the engine. you have it "dash harness". should be engine harness

later

 

What has got me baffled is this configuration of wires...

Engine harness:

1.black - blue
2.brown - none
3.brown - black
4.red - none
5.yellow - none
6.black - white
7.brown - yellow
8.black - yellow
9.white - blue
10.brown - white
11.black - green



Now this is what we've got to concentrate on. I need more info. Your car is a 1993 domestic FD, LH drive, manual, bought here in the states?

And nothing was done to the front harness ? What has changed since it was last started? Is the connector that has the 11 wires also blue?

Too bad you don't have a camera



Later

 

ok my car is a 93' domestic fd, LH drive, manual, bought just the shell from indiana, i then bought a 93' jdm 13b with a cut harness, with the shell came an engine harness which is in the car now (dont know anything really about the harness). All of the harness is stock and i have never gotten the car to start yet. I might have pics for you by tonight and the connector with the 11 wires is blue, they are both blue.

 

Then you probably have a Japanese model front harness with a domestic engine harness. I cannot find any of those wires in my manual.

Good Luck


Later

 

should i get a new engine harness then? How do i solve this problem!

Please help your the only person that seems to know what there talking about and that cares! lol

 

Email me at Blueyes02@adelphia.net and I;ll help you


LAter

 

hey i sent you an e-mail not sure if you got it? if you didnt here is mine and e-mail me
fieldseclipsegsx@yahoo.com

 

For those out there that are very knowledgeable on the X-05 connector, here is a test for you!

Have you ever seen a X-05 connector coming from the engine harness with 12 slots with 11 wires going into the connector?
Well i have one and i have no idea why its like this!
Now the X-05 connector on my body harness is normal and has 10 slots with 10 wires and obviously does not fit with the other connector (the engine harness)
Here is a picture of the engine harness connector with 12 slots

http://img247.imageshack.us/my.php?image=1000622ke8.jpg

here is one with the 11 wires..

http://img146.imageshack.us/my.php?image=1000624ro5.jpg

here is the body harness that has 10 wires (the normal one)

http://img213.imageshack.us/my.php?image=1000616ct7.jpg

Now your probably asking, since there are 11 wires on one connector and 10 on the other, what color wire is the one that has nowhere to connect to on the body harness. The color wire is Brown with a yellow stripe and it connects to the top of the secondary fuel rail (it is a green connector) and i believe it is the fuel temperature sensor.
Now this brown and yellow wire in the manual is supposed to be on the white engine harness, i looked for it on the the harness and there is an empty port on the connector for where this wire should go.
Now my main question is, why are the X-05 connectors like this it just doesn't make sense?

 

Expert Rotorheads only - I am working with this young man to help him sort this out. I am quite baffled myself to see this configuration of wiring. Now I've torn down plenty of 1993 FDs and never seen these X-05 connectors with this configuration of wires ( both automatic and manual harnesses ). The information I have is what is basically written up here. He has a brown/yellow wire on X-14 AND X-05 that go to the fuel thermosensor on the rail. I need to know the root cause of this story.

So chime in experts of old -


Later

 

That's JDM verses US wiring/ecu thing. There are several threads on here of people running into that trying to use JDM emissions harnesses with US ECU's. Most of them just run a PFC which can ignore the fuel thermosensor and call it done. Otherwise, just move the pin to the proper connector for the US ECU.

 

Is there a JDM electrical diagram available on-line somewhere to look at ? Provide me a Mr Link for that if you know of one



LAter

 

Unfortunately, I haven't seen one. I've seen people asking for one but I haven't seen one posted here. I never did look in the Far East section to see if anyone has posted up JDM manuals there but I would have figured they would have migrated into this section if they had been posted anywhere.

 

well i finally got it started last night for like a minute, Having a fd with just a downpipe and living at a condo at 11pm is kinda loud! lol
now to continue with the rest of the X-05 connectors.

 

was this ever solved? i have the exact same issue and need assistance