Base Type: T10/194 (W2.1x9.5d Wedge);Fit diameter 1/2/ Hole twist lock base socket
Led Buld Size:9.7mm x 24.66mm ; Base Type: T10194 (W2.1x9.5d Wedge)
Application: Interior (Map, Dome, Trunk,License Plate Light),and also use for Dashhboard,Side,Indicator,Instrument panel,Seedometer;Shifter,AC panels and other gauges Light;Air conditioning indicating lamp;Center Console,interior light,etc.
Kindly be aware that if the LED does not illuminate, you can rotate it 180 degrees (invert the polarity) to fix the issue.