Ive got a 93 honda prelude and just out of the blue anytime i turn my head lights on when i hit the break lights the break lights go out. Also when i turn my signals on the whole back of the car flashes, but this only happens when the head lights are turned on! Can someone please help me out?!?!?!?!?!?!?!?!

 

welcome to the forum. Get a wire diagram of your car and trace your wires, view them and you may find a short in the wires after the head light switch.

 

I agree it is grounding out somewhere,checkfor worn wires .