cciyu 4 Pack 168/194 T10 Twist Lock Wedge instrument Panel Dash Light Bulb Base Socket Replacement fit for T10/194/168(t3-1/4) Type Miniature Wedge Base Bulbs Socket Hole Diameter: 1/2" or 13mm diameter hole Cross Reference: Replace Stock Number:W5W 147 152 158 159 161 168 184 192 193 259 280 285 447 464 501 555 558 585 655 656 657 1250 1251 1252 2450 2652 2921 2825 PC 175 2886X. Application: Replace the light with T10 base, such as side markers, running lights, corner & bumper lights, license plate lights, instrument cluster, gauge bulbs, dashboard and factory housings. Available to use in CAR/MOTORCYCLE/SCOOTER/TRUCK.T10 LED bulbs for instrument Panel indicators,Speedometer,tachnometer,Gauge Cluster, Check Engine indicator, Highbeam indicator, Shifter Lights,etc. Please NOTE: If the LED does not light up, simply Rotating it 180 degrees (reverse the polarity)