Originally Posted by Elan

Well unlike some cars, the Z uses the same bulb for the high beams. Correct me if I am wrong, but it uses a mirror of sorts to simply deflect the light from the bulb up. Hence the sound it makes when high beams are engaged. It doesn't really prove much though. Only that either the bulb is dead or a wiring problem.

I think many people that have experienced ballast issues have the bulb go on for a few seconds and then turn off? But I could be wrong. Just things I have read from others.