I bought a pair of these bulbs off eBay: CANBUS LED/SMD NUMBER PLATE BULBS AUDI A3 03+ on eBay (end time 12-Mar-11 10:38:47 GMT) My old LED bulbs were throwing errors, and switching off about 2-3 seconds after coming on. I swapped them out for these new bulbs, and the new bulbs haven't ONCE illuminated. I've played with the connectors, as I had to the first time round with my first set of LED bulbs, to make sure they contacted properly inside the tailgate. I've swapped them end to end, and rotated the bulbs to make sure the heat sink can't short out on the connector tangs, and all four bulbs (two old, two new) work just fine when hooked up to my battery. WHAT IS GOING ON?! My old bulbs won't light up now either. I disconnected the car battery for about ten seconds or so, wondering if an error needed clearing, but I'm clutching at straws now and getting flipping annoyed with it!