V1 Please help me identify these "extra" wires in the harness

[duthehustle93]

Hi All,

The previous owner of this Goblin was "half-way done" with the wiring harness, and he seemed to be pretty uhhhh... creative.... with which wires to cut/not cut, and which wires to join together. I went through the videos from the start and thought I caught everything, but I must have missed a few things.

I've reached the last video of the wiring harness guide, and I have some extras. Can you help me identify what to do with them?

There are 7 wires, as you can see in the pictures questionable wire #1-2 are at the fuse box side, and 3-7 are at the BCM side.

Fuse box side:
1) Brown wire: the other end of it goes to the coolant tank plug. However, I don't know where to land the wire to. The second wire on this plug is grounded.
2) Pink/black pair. I labelled this "B2 key on intercool pump." I believe I'm supposed to run this down the main harness, and drape it over the BCM to be taped into the headlight harness?

BCM Side:
3) Thick blue wire. The other end of it goes to the fuse box side to a female quick disconnect which I believe is for the radiator fan... but what do I do with the wire at the BCM side?
4) Two brown wires that were knotted together. They seem to run down the main harness to the fuse box side.
5) Grey wire, coiled. I traced it back to BCM connector X3, pin B12: Instrument panel lamp supply voltage.
6) Brown wire, knotted on the end. Traced back to BCM connector X3, pin A7: Park Lamp supply voltage.
7) Pink wire: I remember this being brought up in one of the early videos, and I labelled it as described in the videos as "D7 Key on heat exchanger fan."

Any and all help is appreciated.

Rough locations of mystery wires:

Mystery wire 1 and 2:

Mystery wire 3 and 4:

Mystery wire 5, 6, and 7

 

[Traé]

Fuse box side:
1) Brown wire: the other end of it goes to the coolant tank plug. However, I don't know where to land the wire to. The second wire on this plug is grounded.
The coolant level plug is cut and pulled back to the BCM and later extended to the fuse box side of the car. "Wire Harness Guide Part 5 - Time Stamp 7:00"
2) Pink/black pair. I labelled this "B2 key on intercool pump." I believe I'm supposed to run this down the main harness, and drape it over the BCM to be taped into the headlight harness?
This wire is to power your intercooler water pump when the key is turned on. This pair stays at the rear of the car. A red extension wire is attached in the video. "Wire Harness Guide Part 6 - Time Stamp 3:00"

BCM Side:
3) Thick blue wire. The other end of it goes to the fuse box side to a female quick disconnect which I believe is for the radiator fan... but what do I do with the wire at the BCM side?
The BCM side gets attached to the radiator fan wiring, the fuse box side gets tied into the black plug. "Archived Goblin Assembly Videos Part 20 - Time Stamp 5:00"
4) Two brown wires that were knotted together. They seem to run down the main harness to the fuse box side.
The two brown wires are more than likely going back to the fuse box for the rear brake lights. Watch part 5 as they talk about what wires to pull back to the fuse box as you are cleaning up the harness. The wires get taped and organized with the other tail light wires in "Wire Harness Guide Part 6 - Time Stamp 4:20"
5) Grey wire, coiled. I traced it back to BCM connector X3, pin B12: Instrument panel lamp supply voltage.
May need to be tied into the cluster plug. My cluster was not lighting up and it was because of the missing wire and a missing fuse. http://dfkitcar.com/forum/index.php?threads/traé’s-goblin-06’-ss-sc-501.4766/post-100603
6) Brown wire, knotted on the end. Traced back to BCM connector X3, pin A7: Park Lamp supply voltage.
Seems like it is powering parking lights for the front. I would think there would be two wires coming from a brown junction. Watch "Wire Harness Guide Part 10" as they start to combine everything.
7) Pink wire: I remember this being brought up in one of the early videos, and I labelled it as described in the videos as "D7 Key on heat exchanger fan."
Powers heat exchanger fan at the front of the car behind the radiator. When wiring this, it is recommended to install a diode to keep the car from running for a few seconds after the key is turned off. I have a few leftover and can mail you some.

 

[Robinjo]

100% agree with getting the diode on #7 wire. I had the run-on issue, the diode solved it.

 

[duthehustle93]

Fuse box side:
1) Brown wire: the other end of it goes to the coolant tank plug. However, I don't know where to land the wire to. The second wire on this plug is grounded.
The coolant level plug is cut and pulled back to the BCM and later extended to the fuse box side of the car. "Wire Harness Guide Part 5 - Time Stamp 7:00"
2) Pink/black pair. I labelled this "B2 key on intercool pump." I believe I'm supposed to run this down the main harness, and drape it over the BCM to be taped into the headlight harness?
This wire is to power your intercooler water pump when the key is turned on. This pair stays at the rear of the car. A red extension wire is attached in the video. "Wire Harness Guide Part 6 - Time Stamp 3:00"

BCM Side:
3) Thick blue wire. The other end of it goes to the fuse box side to a female quick disconnect which I believe is for the radiator fan... but what do I do with the wire at the BCM side?
The BCM side gets attached to the radiator fan wiring, the fuse box side gets tied into the black plug. "Archived Goblin Assembly Videos Part 20 - Time Stamp 5:00"
4) Two brown wires that were knotted together. They seem to run down the main harness to the fuse box side.
The two brown wires are more than likely going back to the fuse box for the rear brake lights. Watch part 5 as they talk about what wires to pull back to the fuse box as you are cleaning up the harness. The wires get taped and organized with the other tail light wires in "Wire Harness Guide Part 6 - Time Stamp 4:20"
5) Grey wire, coiled. I traced it back to BCM connector X3, pin B12: Instrument panel lamp supply voltage.
May need to be tied into the cluster plug. My cluster was not lighting up and it was because of the missing wire and a missing fuse. http://dfkitcar.com/forum/index.php?threads/traé’s-goblin-06’-ss-sc-501.4766/post-100603
6) Brown wire, knotted on the end. Traced back to BCM connector X3, pin A7: Park Lamp supply voltage.
Seems like it is powering parking lights for the front. I would think there would be two wires coming from a brown junction. Watch "Wire Harness Guide Part 10" as they start to combine everything.
7) Pink wire: I remember this being brought up in one of the early videos, and I labelled it as described in the videos as "D7 Key on heat exchanger fan."
Powers heat exchanger fan at the front of the car behind the radiator. When wiring this, it is recommended to install a diode to keep the car from running for a few seconds after the key is turned off. I have a few leftover and can mail you some.

Wow, this is awesome, thank you so much!! I've got today off, so this will allow me to wrap up the harness today.

My kit came with an A2A intercooler, so I'm assuming wire 2 and 7 I can just cap and tie up? I'll leave them there in case I want to switch to A2W later, but for my application A2A is better anyways. I appreciate the offer on the diode, but since I won't be needing a heat exchanger fan, I'll just leave it capped with a note to use a diode if I need to use it later.

 

[Traé]

Wow, this is awesome, thank you so much!! I've got today off, so this will allow me to wrap up the harness today.

My kit came with an A2A intercooler, so I'm assuming wire 2 and 7 I can just cap and tie up? I'll leave them there in case I want to switch to A2W later, but for my application A2A is better anyways. I appreciate the offer on the diode, but since I won't be needing a heat exchanger fan, I'll just leave it capped with a note to use a diode if I need to use it later.

I would say that’s correct. If you’re not circulating coolant and using air to air there should be no need for the key on power to the water pump or HX fan. I have a supercharged one so I’m not too familiar with the turbo HX system.

best of luck to you, I was nervous to do the harness myself but it worked out. Having one half way done would scare me but I would say going through their work as you follow along with the videos is possible. I recommend getting the car to crank or start without fully wrapping the harness, that way if things need changed you don’t have to unwrap it or cut into tape to fix stuff.

I see your engine is in the car, I got mine to crank outside of the car before I wrapped the harness fully.

 

[duthehustle93]

Good advise on bench testing the harness before closing this up. I was planning on using split loom as well which will help a bit if (when) I need to go back into the harness.

Thank you again for your help, you have no idea how much time this saved me.

I'm pretty sure all these are sorted out, but if anyone sees anything wrong here please let me know... I'd rather be wrong now, than have a non-running Goblin later. Also, I want to post this up for reference to anyone in the future.

1) The issue was the previous owner cut this wire a few inches proud of the BCM connector, taped it into the "leg" of the harness, and also lost the original coolant plug. So, to anyone looking at this later... the wire should be light green all the way from the BCM-plug (as shown in the video)... mine is brown because the PO used a different plug, and I'm not seeing anywhere that you're actually supposed to even cut the plug.
2) This pair is good as-is.
3) This blue wire is good as-is.
4) Brown wire... this one was fun. Traé directed me to the video which led me to trace down the junction which the PO taped up. I cut open the tape... aanndd...

This has been par for the course. I guess the PO decided to cut all the wires out of it and dead end both sides, but still leave it in the harness. In the videos, they runs 3 wires out of this junction to the fuse box side (for license plate/left+right tail lights [parking lights]), and 3 go to the BCM side, where 2 are dead ends and 1 still looks connected to something in the video. The 1 that is connected to something in the video likely goes the BCM. For the two dead ends, I was originally thinking they were for brake lights as you said. They are switched to red for for turns signals in video 10 @ 2:00. The brake lights also have brown wires but they are extended off fuse box X3 pin C1 at video 7 @ 1:00. For the 1 wire that goes to the BCM, per wiring diagrams, there is 1 brown wire out of connector X3 that powers park lights (Pin A7). This explains my mystery wire 6! I gut all this out and ran 1 wire to A7, junctioned it into a bundle of 6 and ran 3 for tail lights [park lights], and 2 for the turn signals.
5) I went to the grey wire at the cluster plug and traced it back into BCM connector X4 pin C2, which is actually labelled the same: Instrument panel lamp supply voltage. So I checked continuity and there's continuity between the grey wire at the cluster plug, X4 C2, AND X3 B12. I'm assuming Traé wired the cluster connector to C2 as nature intended, which leaves B12 still in question. I rewatched the videos and found this. The PO was supposed to remove this wire.

6) see above @ 4.
7) Good as is.