Sounds like a brake pedal switch. When I short the wires to the switch, the brake lights come on, which also makes me think it's the switch. However, this morning I replaced the brake pedal switch with a brand new one, and I've still got the same problems. Can't shift out of park (at least without rooting around in the steering column) and the brake lights aren't working. Obviously, since shorting the wires gets them to work, there's no issue with the bulbs, or the wiring TO the brake lights... Anyone have any ideas?