went for my mot 2day and just scraped through, my headlight bulb drivers was not working, had problem before its a hid kit fitted, i knew it was working before the test just my luck it stopped working for the tester, tried it 3.or 4 times then as he was putting the equipment for testing the lights away tried it again and it worked, very luckey, he said there is a prob get it sorted, but still happey to pass.