when you pull out the cluster like u were doing a indiglo gauge there are four bulbs that light up the gauges themselves. they are simple 194 wedge bulbs, they just unscrew a half turn and pull out then pull the bulb out of the black plastic. they sell these in hyperwhite wich might be the same look but they are going to be real bright and probably sore on your eyes. they also sell colored bulbs but they fade after a while from too much use.