pull it out, change the bulb............... its a replaceable part
if you look in the useful section thread you will see a detailed description on how to get to this referring to the boost gauge, same process same holder
Part Number:24860-88F00 Description:SOCKET & BULB ASSY
This is old but hope this helps. It is for the boost gauge but I believe they are the same bulb.Also, the US doesnt carry this part so I went to Honda/Acura and used one of their small TS bulbs. It was a bit smaller bulb but had the same base and watage. It lights up just fine at night as well...too bad it cost me $10USD