V1 Wiring harness plugs

[Leo Zugner]

Howdy friends,

I got my harness back from DF and it looks awesome. I got most of the plugs figured out but there are a few that I'm not sure about. Can y'all help me identify a few?

This one looks like a power wire in the engine bay area. I labeled it "C" when we took the cobalt apart but I don't see a "C" on the engine now.

This push-button was on the harness that I got back and it looks like the clutch switch, but i already had a button installed on the clutch. Is there a second one of these supposed to go somewhere or do I have a duplicate?

There two are on the frontal area of the harness but I don't see anywhere to put them.

This is on the top of the brake pedal but I dont see a plug that goes in here.

 

[comegetjoe]

Top one goes into the BCM or the Fuse box, depending on which end of the car its on.

I always read to show wire colors in your pictures as well as connector ends.

Last picture is your OBDII port.

 

[Leo Zugner]

Top one goes into the BCM or the Fuse box, depending on which end of the car its on.

I always read to show wire colors in your pictures as well as connector ends.

Last picture is your OBDII port.

OK cool. Thanks!

So top one probably goes into the fuse box by the engine...

You saying I should say what the wire colors are? I'll add those when I get home.

The OBD port only get connected to something if I want to hook the reader to it?

 

[Rttoys]

Brake switch only uses one connector.

 

[duthehustle93]

Top one is BCM power; the connector looks like it goes to the fuse box (corner plug).

my donor uses a potentiometer, but some cars have a switch on the brake pedal and clutch pedal, and some have two switches on the clutch pedal (for redundant confirmation of up or down). That looks like a pedal switch.

For the two white plugs... the 2 conductor is likely ambient light sensor, and the 4 conductor I believe is for the boost gauge.

No idea on the brake pedal since mine looks completely different... somewhere in one of the videos I believe I saw that plug.

The last picture you attached is OBD.

 

[Leo Zugner]

Thank you all so much! I feel like I'm close to the first crank!

 

[Adam]

The first plug is in tomorrow's video upload on our YouTube channel:

 

[Leo Zugner]

Awesome. Thanks Adam!

 

[ah.b.normal]

Howdy friends,

I got my harness back from DF and it looks awesome. I got most of the plugs figured out but there are a few that I'm not sure about. Can y'all help me identify a few?
View attachment 52973
This one looks like a power wire in the engine bay area. I labeled it "C" when we took the cobalt apart but I don't see a "C" on the engine now.

View attachment 52974
This push-button was on the harness that I got back and it looks like the clutch switch, but i already had a button installed on the clutch. Is there a second one of these supposed to go somewhere or do I have a duplicate?

View attachment 52975
There two are on the frontal area of the harness but I don't see anywhere to put them.
View attachment 52976
This is on the top of the brake pedal but I dont see a plug that goes in here.

You are using 05 donor. The brake pedal has one switch(brake light, CHMSL and Cruise Control) with two connectors. The 05 clutch pedal has two switches, each at the opposite ends of pedal motion........ Both the brake and clutch pedals in 07 up cars have a single full throw switch, very different. Not interchangeable, as the late full throw switches are deciphered by the BCM and if replaced your BCM must be taught the new switch with a TECH2 GM computer(not a simple code reader computer). PITA!