The bulbs are electrically polarized so you may need to rotate them 180 degrees to light them. So far I've had no trouble fitting my 2011 F10 528i, except for the cosmetic lights and the larger rear trunk lamp. I can't get one of the bulbs to stand up properly and glow on the dressing table (see photo). It currently only illuminates one side and emits very little light. The large trunk tail light is in contact with the body, so it's angled rather than flat.
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