Headlights don't work

[smithmouzey]

I have a 1990 Nissan Pathfinder, all the lights work except the headlights, what could the problem be?

[admin]

Hi smithmouzey,

What Haynes manual are you using (include the number/letter combination on the title page, just to the right of the Haynes logo), and what have you done so far in your diagnosis?