Please try the troubleshooting steps below if you encounter any of the following issues, or contact us through a message for more assistance, we would love to help, negative ratings would not resolve the issue you have.
For bulbs that do not turn on (do not work after plugged in)- you can try adjusting the pins on the led bulb and retest,
there could sometimes be some minor connection issue. If that does not work, please try rotating the bulb plug 180 degree
Advantage: Non-polarity design,Compatible for both CK/SRCK and Standard socket.
https://www.youtube.com/watch?v=V8ONj-NJdjA This test helps to determine your car's socket being a ck or a standard socket. A lot of times fuses burn or bulbs malfunction due to mismatch in socket and bulb types.