my vk only has 4 wires that come from behind the head unit that was there when l bought the car. I've bought a new stereo head unit and want to put it in but i'm having trouble with these 4 wires stock with the car.
All l've got there is:
Light Blue
Grey
Black
Green
You're going to have to find or create the other wires... Look in the sticky thread about VK wiring, if you can't find the wires listed, you'll need to create them. Ground and constant power are easy, accessories can be found under the dash somewhere, like cigarette lighter wiring. Then run all new speaker wiring, which you would have to do anyway for an aftermarket head unit.