Dash lights
 

I have a 2009 Ram 3500 and my dash lights don't come on nor do the dome lights with the dome lights with the door open. I have replaced the headlight switch and it kinda repaired it, and by that I mean every once in awhile they come but when I touch the brakes they go out or when I shut the door they go out and the dash makes a buzzing sound as they go out. Does anybody know what causes this or do you have the wiring diagram for the circuit?:argh: