The right hand side blinkers in my 2005 Holden/Opel Barina stopped working. When I turn the blinkers on they do the right click-click sound just much faster than usual. All 3 blinkers stopped working. I've checked the front and rear bulbs and are good. I've checked the fuse and it's good. I've measured the voltage on the metal contacts at the back and there is no voltage at all.
Where should I start looking for the problem?