Royale Brougham 1989 Headlights

Dear people

The driver's side headbulb of my 1989 Eighty Eight Royal Brougham is crashed and burned on the bulb entry. I'm living in Mexico, near the border and there are no cars like this on local autoparts shops. Does anybody know where can I find one or both of the headlights, new or used?

Thanks a million

Fernando Zavala