Help my ford falcon XH ute headlights don't work

My xh utes headlights stopped working and no one knows why, several auto electricians including Ford can't find the reason for this.
Does anyone know what is possibly might be.
Any info would be aprreciated.
Thanks

Thats interesting, i'm a littel puzzeled as to why a auto elec & ford can't find it???

I can only make ovious sujestions, oviously some one will have checked fuses, bulbs ect by now so I'd suggest the relays, the switch or dipper unit & also if its got a automatic shut down relay (where the head lights turn off with the key to aviod flat batteries) these can play up or have they checked for a earth fault in the headlight wiring or perhaps some melted & shorted wires some where.

did it use to blow fuses at all before this??

Dose it have any aftermarket light mounted on it?

Do parker tail & dash lights still work??

If u leave a little more imformation I'll try to help!!