Hello I'm trying to fit a stero to a 2005 Skoda superb edition 100 but I cannot find the wiring for the speaker .could anyone possibly send a picture of the back of there headuint with the plug attached to see what colours the speaker wire is ? Thank you 

Car wiring should be:

 

LH front: red/green and brown/green

LH rear: red and brown/red

RH front: blue/white and brown /white

RH rear: blue and brown/blue.

 

You can check by connecting the appropriate pair to a 1.5 volt battery and listen for the speaker that makes a click.

 

Does your car have the original amp and subwoofer in the boot?

On second thought, IS there a subwoofer? Or is there only the amp?