Friends As above: This is not for a Merc, its for a BMW. I want to fit LEDS to the reading lamps on my X5 Dome Light it has one reading light either side of the main dome lamp. I know that the Canbus W5W Capless Wedge Error Free LED's work okay as I have tried them.. I have a fitting issue. The LED's that I find on ebay, are to fat in diameter to fit through the bulb housing hole (the hole the LED twists into) I cannot push the LED home far enough to engage the screw. Does anybody know a supplier (link please) who supplies a smaller diameter LED that will allow me to push the bulb home before twisting it home. Trying to trim he plastic down on the LED itself can result in uneven finger lengths or irrational demands on Mrs M to help me out (as in do it for me). Its just fiddly, dangerous and not fun. Has anybody got any clues who may do a W5W LED that is the same diameter fitting, as a W5W Glass bulb?