Got to love Italian cars…wife’s 500 DRL has gone passengers side. Orders new bulbs and today changed the blown one. Before putting it back into the holder check it’s working. So far all good. Put it into the holder bulbs not working. Take it out and lo and behold starts working. Double check it’s in correctly put it back into the holder stops working. Take it out and works again. Done this a few times to the point I thought the wife was turning the ignition off and on . Checked the bulb holder best as can and it looks fine. Any ideas anyone? TIA