Hi,
I am searching what to modify to get on wire to brake/turn signal to rear lamps only turn signal. To left/right brake lamps I will put voltage from center brake lamp. Also need to made fog lamp.
Must done it becasue car is in EU.
Looking for complete electric diagram, idea if someone can help I will appreciate.

 

Ill get you some diagrams and connector views when I get a chance. You are going to have to run resistors on the rear turn/brake light circuit so you don't have fast flash. Also you should run a led rear turn bulb since you will have to splice of the front signal out of the bcm. Running two conventional bulbs on one line could damage the bcm with the extra amps it will pull on just the front circuit.

 

I found bcm pinout but for older cobalt and it is quite different. If someone got it. Please post.
Now trying...

 

Hi there,
I modify taillights for the Cobalt, some of them have separated brake and blink function.
I have ran wires from the front blinkers to the back of my car and get the brake signal from the 3rd brake light like you suggested.
The fuses for the front blinkers are located in the BCM in the center console, but I found it easier to get the signal from the actual headlight wires.

 

Here is the lighting diagram and a connector view pinout of x1 and x3 of the bcm. x1 will have your front turn signal wiring, x3 will have the rear.
09 Front turn and rear StopTurn light schematics.pdf
BCM X1 Connector view pinout.pdf
BCM x3 Connector view pinout.pdf

 

Ok, made it. Taking in BCM voltage from front turn signal to rear wires brake/turn signal. Turn signal was blinking too fast so I gave next to BCM two diodes and resistor(stick to metal by thermoconductivity glue). Stop signal left/right taken from center brake.
Got led lamps but they doesn't look so good like colodude18. I will made video and post here.

Now I am searching front brake disc and pads. It is quite interesting how many cars got identical but producers don't praise it. Searching and searching.

 

Do you have the supercharged or turbocharged SS? I know the stock brake rotors for the turbocharged are made in Germany and the Brembo brake pads in Italy so they should be available through the Opel dealer network there I would guess. I'm not familiar with the supercharged brake setup.

 

I got Turbo. Brake pads are identical in Opel Corsa Turbo (also Alfa 4C, Miata, Megane, Clio) so I taken TRW got option with Brembo (softer) but taken slotted and drilled rotor from another Opel - Astra Turbo 321mm with different centering hole 70mm so ordered centering rings. TRW brake pads should be harder. If it came in few days I will mount at mine friends place: front rotors, brake pads, rear hub, steering rack, also thinking to buy aluminium soundproof mat for sunroof.


Weak photo in night. Inside lamps are turning signals and reversing light.

 

Drilled rotors are generally not recommended as they are much more prone to cracking. If you don't track your car you are probably fine though.

 

Cracking in drilled rotors are normal it is cast iron. I want to go for track when (almost) everything will be ok and I will be no scared for hard drive. Because now car is only moving.

 

You just have to keep a very close eye on micro cracks in your rotors. If a large crack develops suddenly on track, you could have a very bad day...