Central locking wiring - help needed

[Alphatiger]

Hi for my Kia Rio 2013 the keyfob buttons are faulty so I got a standard replacement central locking kit from ebay as shown.

I'm struggling with finding the 2 main wires. On the driver's side there are numerous coloured wires going to the doorlock actuator. I used my 12v electric bulb tester screwdriver by putting the crocodile clip on bare metal and tested each of the 8 wires one at a time by pressing the dashboards central locking button but no light on the tester?

Please help,see photos.

[Alphatiger]

[Alphatiger]

[Alphatiger]

[Alphatiger]