My headlights go out altogether if I put brights on..

What is your question?

My high beams icon on my dash is always on now.. About 2 weeks.. My headlights are dimmer than they should be..(Not good!) If I put highbeams on all the headlights go off.. A plug that is white that is on drivers side that plugs into headlights area (it's square looking) seems dark like burnt.. Are there fuses for headlight?.. Thanks You..