When I was on holiday last week I changed both my dads and my own dipped bulbs to Philips Xtreme and we are both delighted with the results. My question is, on the pre facelift Vectra the bulb change was a twist and then the bulb and holder came out and felt very secure when replaced but on the facelifted Vectra it just pulled out. Is this correct as it didn't seem very secure when I replaced the bulb into the housing?