WLJH 10pcs T5 Twist Lock Socket Wedge Base 3/8" Socket Dashboard Instrument Panel Cluster Plug Lamp Dash Light Bulb 37 74 73 Socket Mini wedge bulb socket fits a 3/8" or 9mm diameter hole,Easy installation, just plug and play. CROSS REFERENCE: T5 17,18,27,37 ,57,58,70,73, 74, 79,85, 86,206,207,286,306,2721. APPLICATION: Replace the light with T5 base,such as side markers,running lights,corner bumper lights, license plate lights,instrument cluster, gauge bulbs, dashboard and factory housings. ATTENTION: If the LED does not light up, simply Rotating it 180 degrees (reverse the polarity). HIGH QUALITY:Built to strict quality control standards,we will Provide"12 MONTHS" Warranty guaranteed for manufacturer quality. Mini wedge bulb socket fits a <u>3/8&#034; or 9mm diameter hole</u> Easy installation, just plug and play. Dimension: W2.1x4.9d - Subminiature Wedge Socket for T5 74 type Miniature Wedge Base bulbs Available to use in Car/Motor/Truck Hear is for the <span class="a-text-bold">left side </span>of mini wedge T5 bulb socket fits a 3/8/ or 9mm diameter hole. Please do not confuse these sockets with the <span class="a-text-bold">right side</span> of larger T10 194 wedge socket which fits a 1/2/ hole. Mini wedge bulb socket fits a 3/8/ or 9mm diameter hole Socket type with solder terminals and mounting hole Dimension: W2.1x4.9d - Subminiature Wedge Our Socket built to strict quality control standards Easy installation, just plug and play Socket for T5 74 type Miniature Wedge Base bulbs