Ok so heres the story. I have a 89 but the harness was hacked for a 4th gen dash set up and instead of looking to find all the stock connections I decieded to get a new one. So I ended up with a 87 Iroc dash harness out of a parts car I had that was a TPI harness. Its completely never been touched ever. Im looking for the wires to connect the reverse lights and neutral safety switch so I can swap in my T56 connectors. So heres some info on the harness

Its from a 87 Iroc, 5 speed, all options and TPI

I took the ECU connectors and wiring out but I have a few I have no clue what they are for. Im going carb so I have no need for ECU stuff. Here are the pictures of the connectors. I will decribe the areas they are in the best I can. All are from the dash harness.

PLEASE let me know if you have a clue as to what these connectors are. Thanks

THESE 2 ARE FROM WHERE THE STEERING COLUMN CONNECTORS ARE



THESE 2 ARE CONNECTED TOGETHER. THE ONE ON THE RIGHT WAS MIXED IN WITH THE ECU CONNECTOR WIRING. THE OTHER IS CONNECTED TO THE ONE ON THE RIGHT BUT THE CONNECTOR IS NEAR WHERE THE CIGERRETTE LIGHTER IS IN THE HARNESS



THESE 2 WHERE ALL THE WAY OVER WHERE THE ECU IS BUT NOT IN THE SAME WIRING MESS BUT STRECH ALL THE ALL TO THE PASSENGER DOOR



ONE RANDOM ORANGE WIRE NEAR WHERE THE H-VAC CONNECTORS ARE. NO CLUE WHAT IT WOULD BE FOR

 

No one has ever seen these connectors at all and know where they go??

 

I think I figured out the wiring in the 3rd pic down from the top. Looks to be the parking brake wire

Found a couple more connectors I dont know where they go

I think this is the VSS as it plugs into the C1 VSS in the harness ( Brown wire ) and the pink goes to a mass of othe pink wires that look the same. I take it that the pink is a 12v source of some sort

Also found this one
its got a yellow wire that goes to the steering column, and a purple one that goes to B4 on the C100 ( starting system ) but before then it splits and one end goes to the fuse block

 

Ok heres some more onfo on the other wiring from before. I hope this helps with getting an answer as I know there are alot of knowledgeable people on here for wiring

FIRST PICTURE

RED single wire plug goes to G5 on the C100 which says G5 is power distribution ( light switch, fuse block )

other connector with the 3 wires going into it

Orange - Goes to the second fuse panel. I call it a relay box. Its located on the passenger side of the steering column

Yellow - goes to C on the connector to the rear part of the harness towards the hatch area

Blue - goes to B on the connector to the rear part of the harness towards the hatch area

SECOND PICTURE

The black conector with 5 wires coming out of it

2 Pink wires - go to the fuse block

Green - goes to G on the connector to the rear part of the harness towards the hatch area

Blue - goes to the connector on the left as you can see where the plug into together. Then to the fuse block after

Brown - G7 on the C100 - Computer command console ( V8 VIN H, V8 VIN G )

Red connector on the left

Blue - Goes to the fuse panel and to the connector on the right

Purple - Goes into the steering column

THID PICTURE

Im pretty sure this is the parking brake wire and the other has to do with the center console

FOURTH PICTURE

is a random orange power wire that is near the cigerrette lighter

 

I think the one in the forth pic is for cruise control as there is the matching wire on the column. Still need help with the rest. Can anyone help me out??

 

Still waiting for anyones opinion????? Is this in the wrong section???????? I found out the yellow, blue, orange one in the first pic is the stop light switch in a manual harness as they are different than a auto one

 

I'll try to help out but a few of this connectors don't look very familiar. Here goes...

In your first post, second pic....that red connector I believe is supposed to have a flasher style relay attached to it, though I don't know it's function.

First post, third pic....you are correct. The single tan wire goes to the E-brake, and the other one I believe is for the glove box light. General rule of thumb on these cars is that most of the time an orange wire combined with black or tan is for an accesory light.

First post, fourth pic....looks to be for the cigarette lighter, but there should also be a single black (ground) wire as well that runs to it.

As far as your second set of pics, that first one isn't the VSS plug for the tranny....if it was it should be a waterproof weatherpack connector so it must go inside the car somewhere.

Is this new harness out of a stick car or auto? That second pic looks like the neutral safety connector thats mounted down on the clutch pedal sensor on a stick car.

 

Also figured out that the single red wire on the with connector in the first pic in post 1 is for the cruise control

Also figured out the one in the first pic 3rd post down from the top to also be part of the cruise control

Purple and Yellow wires in post 3 2nd pic are the neutral safety switch wires. Either they will be wired together or put to the clutch pedal

both will be eliminated as Im not using cruise control