I changed mine for an led bulb last week. 2×10 mm bolts and then the rubber pad needs to be pulled out of the 10mm bolts holes fitted in like grommets to be able to get the wire through long enough to be able to get your fingers on it to pull out the rubber whitish bulb holder out. Mine was very awkward, once the bulb has been swapped its a bit of a bugger shoving it back in the holder. Bulb is a 501 capulate type. Good luck!