When you pull your headlight switch out 1 position, that's "park", that's when the park lights in the hood come on. When you pull it all the way out for headlights, the hood lights go out and the headlights come on. That's the factory way, a lot of people rewire them to stay on with the headlights.
You may have a bad headlight switch and possibly a bad ground. I think the switch grounds through itself to the dash if I remember correctly,
Scott
