Brake lights blink once

[Natynka]

Hello,
I've come across a strange issue with my fiat grande, when i press the brake pedal the lights turn on for a brief moment but immediately shut off , the tail lights do not work at all, the indicators work just fine. Have changed the brake switch, checked the cables, it all seems fine. What could be the issues?

 

[Natynka]

Hello,
I've come across a strange issue with my fiat grande, when i press the brake pedal the lights turn on for a brief moment but immediately shut off , the tail lights do not work at all, the indicators work just fine. Have changed the brake switch, checked the cables, it all seems fine. What could be the issues?

* The brake lights come on every time I press the pedal, but for like a second