Ok so im driving home put on the lights and noticed that my cluster lights keep going on and off not the actual dials but the lights the lights that light up the whole cluster , im thinking loose bulb or faulty bulb is it one bulb that lights up the cluster any help would be great , thank you

 

from the manual:

When the car lights are switched on, the instrument
lighting for light dials switches on and off
automatically depending on the ambient brightness.

 

thanks ecostellodo but this is in complete darkness they go on and off