Ballast Resistor

Starter relay would be my guess. Neutral saftey switch would be next. The gear selector must be firmly and positivly in park.

Starter relay by-pass starting.
With the car in park and the key in the run position, try a screwdriver between the 2 starter post contacts.

And yea, what he said. LOL A test light will tell you if it is a broken wire.