where do these wires go (with pics)

thurobred1320 · May 30, 2009

ok guys im doing a 4cyl to v8 swap..1990 4cyl notch. bought a 1990 engine harness comp etc. most of the plugs worked out but ive got a few questions. i think i may be missing a section.

both of these wires are coming off the main harness that plus into the computer. in the first pic the one of the left is the eec ground correct? i cant find anywhere to plug that in and the one of the right according to the wiring harness goes to the a.c anyone have a pic or or diagram of where the eec ground should connect too?

ive got a few other connectors im not sure about but i can only upload two pics at a time so i guess one problem at a time lol

nunly94gt · May 30, 2009

I am yanking my harness out in the morning, I will see what I can tell you then.

thurobred1320 · May 31, 2009

awesome man id appriciate that...any pics of the wiring near the drivers side fender would be a plus...thanks man

Turd Tops · May 31, 2009

In your 1st pic. The plug on the left is a ground. There should be a connector behide the battery. It's only about 3 to 5 inchs long. Heres a very bad pic of it on one of my parts cars.

The other plug should plug into another harness like this one.

The other end plugs into the A/C.
If your not useing the A/C i would'nt worry about it. Here what it should look like. Again it a parts cars but you get the idea i hope.

Hope it helps you out.

I'm going out on a limb and say you have one extra connector up by the brake booster. Do you know what year harness your using? Maybe somebody will correct me but i belive you can only use a harness from a 90 and a 90 only. If i'm not wrong the 86 had it's very only harness. 87-88 had there own harness. 89 had there own harness. 90 had there own harness. 91-92 and 1/2 of 93 had there own and switched to a diffrent harness for the rest of the year.

So in saying that i belive the 89 harness is the only plug and play harness you can use on 87-88. And in 90 the only plug and play harness you can use for a 4 cyl swap is a 90 harness out of a 90 8 cyl. I may be wrong but maybe someone will chime in and say yes or no

nunly94gt · May 31, 2009

Bingo, I was about to say the same thing.

thurobred1320 · May 31, 2009

ok well the a.c wires i have..one down...but i dont have anything to connect that ground wire too....can i just cut it and put and eye on it and ground it? and as far as i know i have a 1990 main and engine harness..the car is a 1990 and i purchases a 1990 engine harness along with the computer for my 4cyl to v8 swap

Turd Tops · May 31, 2009

thurobred1320 said:
ok well the a.c wires i have..one down...but i dont have anything to connect that ground wire too....can i just cut it and put and eye on it and ground it?

Sure. I don't see why not. Put an eye on it and ground it to the body.

thurobred1320 · May 31, 2009

how about any of the circled clips? those all come off the main harness that connects to the computer

jrichker · May 31, 2009

Post the wire color and stripe color and we may be able to provide some more help. The wire and stripe color help identify the circuit function.

The red/green and tan/yellow go to the ignition coil.

Diagram courtesy of Tmoss & Stang&2birds

thurobred1320 · May 31, 2009

ok both number 1 and 4 are black with a tan or white stripe. i cant tell becuase they are dirty

number 2 is red with a yellow stripe and yellow with a black stripe

and number 3 is black and yellow

where do these wires go (with pics)

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