Concerto low beams not working
 

Hey everybody.
I'm having issues
Iv read every forum about headlight not working and tried everything but my issue sounds different.
When I turn on the park lights the low beam also turn on but very dim. When i turn on the headlamps the low beams don't work at all but everything else does. I hope iv explained it clearly.
Iv taken the light switch out and cleaned it.
Iv checked visually the earths left and right and they also seem ok.
Any help would be great. I can't seem to find and relays either