cciyu 10 Pack T5 Blue High Power LED Car Wedge Speedo Dashboard Dash Side Light Bulb Lamp Built-in Circuit for 12V Power Input. Ultra Bright LED, unique and more vivid color. Faster on/off response time and vibration resistant.74 type(T1-3/4) 3/16 inch wide base small Wedge Base LED bulbs Cross Reference: Replace Stock Number:17, 18, 27, 37, 58, 70, 73, 74, 79, 85, 86, 206, 207, 286, 306, 307, 308, 406, 407 & 2721 T5 wedge base bulbs. Application: Replace the light with T5 base, such as instrument Panel indicators, Speedometer, Tachometer,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)