There's an access panel above the headlamp. Two catches at the rear, depress and remove.

You'll see the headlamp "bucket" under the panel. There should be a big "door" on the back side, held in place by two wire clasps. Unsnap those, they go to the right and left to free the door.

The door may be stuck in place - just use a suitable prying device to SLOWLY coax it out.

You can then see into the inside of the bucket. There's a wire retaining clip that holds the bulb in place - remove it and pull the single bulb - I'll bet it's fried.

I'd replace both left and right as a set - you'll probably notice a big difference in brightness between L & R once you put the new bulb in.

Word of caution - DO NOT TOUCH the glass on the new bulb when handling it. Oils from your skin will dramatically shorten the life of the bulb.

How's life with a V12 in Kalifornia? I'll bet gassing that sucker at $4/gal for premium is a real stinger.