My headlights and two of my break lights are not working on my fiesta zetec s everything else working fine just these 4 bulbs have decided to give up , the odd part being the headlights went in consecutive days and the brakes roughly around the same time, I've had all 4 bulbs out but they are fine, can anyone shed some "light" on this for me please.

Test all under hood and under dash fuses with a test light or multimeter.

Try looking for open wires on conectors or loose terminals. Could have two issues.