Difference in EFI Harness?

[84blkstang]

I have an EFi harness all i know is that it is mass air, other than that I have no idea. Is there any identifying marks or sensors or somthing so I can find what year it is so I know what wires to splice? Also can someone find the Ford Motorsport wiring harness diagram? I looked and cant seem to find it.

 

[TC93]

89 & 90's look alike.. They both have a grey & black plug on the driver side where it would connect to the dash harness. But the 90 will haev white plugs on it for the air bag sensors. One by the MAF plug area & one on driver side.

91 is a solo harness that has one redish looking plug where it would connect to the dash harness,, and have the white plugs for air bags sensors. Want to say 91 also has the fuel pump relay under the hood by the maf plug, but not 100% on the 91's. Some-one else should be able to say for sure..

The 92 & 93 also have one brownish /redish looking plug where it would connect to the dash, and have the fuel pump relay by the maf plug.

 

[84blkstang]

Do you have any pictures of what the relays look like i think mine has them but i dont know for sure, i am kinda illiterate when it comes to the wonders of EFI. The connector by the EFI computer harness is green with a red insert and then the next thing up the main harness looks like a relay but i am not for sure. It is a connector with a black box that comes off. possibally a relay and if this is a relay there is another one right by the mass air harness/ pigtail also it is the next plug after the MAF sensor, hope this helps, also what does the airbag connectors look like there are two white connectors in the harness also Sorry for the ****ty description, hope this helps thanks again

 

[jrichker]

See http://www.veryuseful.com/mustang/tech/engine/ for more help.

 

[84blkstang]

thatks jrichker is that the diagram for the 91-93 harness?

 

[84blkstang]

I cant find out where these two wires go they have white connectors, one has 4 pins and one has 2 anyone know? The wires come out of their harness and go to a relay of some sort

 

[84blkstang]

As i am going through this harness the colors of the wires are not matching up does anyone have a diagram of all the different years?

 

[RsStanG1987]

See http://www.veryuseful.com/mustang/tech/engine/ for more help.

I diddnt need it yet but that is awesome thanks ill be saving that.

 

[84blkstang]

I need to figure out what to splice. I know it is mass air, that is pretty much it though. I tried to reference it to the diagrams on autozone.com but those damn things are too confusing. I dont have access to a digital camera so cant take pictures just yet i will work ok that. I was looking at Tmoss website and the colors of the wires dont correspond with my harness. Then there are some connectors that are not on his diagram that are on mine . I went to 4 eyed pride.com and found a thread on splicing but the colors dont correspond once again. On the green connector by the cpu connector the wire colors are, Grey with yellow stripe, pink with a blue stripe, and orange w/yellow, green with white and two brown ones. I will try and get some pictures of the harness anyone wanna guestimate what year this harness is?