1. For 12 volts
2. Number of Bulbs: 10 PCS
3. LED Color: Amber Yellow
4. LED Type: T10 5050 high power Tri-cell 5 SMD LED
5. Head Diameter: 10mm
6. Height: 28mm
7. Weight: 40.0 g
8. Application: Interior (Door: Map, Dome, Trunk/Cargo , License Plate ,Indicator Light...) , and also use for Exterior (Backup Reverse Lights, Turn Signal Light: High Mount Stop Light , Side Marker Light, Tail Light, Parking Light, Corner Light), etc. Common use for Car, Truck, Motorcycle, Trailer, etc.
Latest European band cars may need to use built-in Canbus Led to avoid the error code on dashboard.
Flip it 180 degrees (reverse the polarity). Move the metal pin clips closer so that they can mount the festoon tighter. (You don't have to do that if you think it might break the clips.)
Try slightly raise the led bulb's metal pin and reinsert (improve connectivity).