i think they are supposed to have a circuit in them that causes the bulb to flicker when there is a problem with the voltage or the leds have died... i have had a few bulbs and found that some of the LEDs had dry solder joints on them... in what way does it flicker and when does it flicker? is it when the car is still? and is it uniform flicker or random.... maybe a poor fit
the L.E.D's are brand new, tried swapping them around, cleaning the solder points. took the lights to bits too and checked all the wiring inside there and it all seems fine
The flicker is totally random...
ill buy some new L.E.D's just incase its maybe them