Fitting aftermarket central locking

Forum: 

My Sirion didn't come fromt he factory with central locking, so I went and brought an aftermarkte kit. Now I'm wondering how to go about in wiring it up.

Now, I don't want to have to run a wire directly from the battery. Another possibilty is to run it fromt the constant 12V line on the stereo, but after having a look at the harness, the wires seems extremely small (gauge of the wire) and i'm afraid it won't like having the central lockign feeding off it.

I've looked in the fuse box in the dash underneath the steering wheel, and it seems that is there is a fuse for the door locks, but after talking to another forum member, it seems that even though the fuse is there, there might not me wiring to it.

So is there wiring to the fuse?
Does anyone know what colour the wire coming out for the fuse box to the door locks should be?

If I can't find the wire, my other option would be to find a constant 12V power wire, anyone got suggestions?