Not trying to be an ass here. (honestly I mean it this time !
) did you trace it all the way back and make sure all the connections were tight? I had issues with one of my blinkers going in and out throwing faults, ended up a loose plug / pin in the plug on the back of the connector. I quick squeeze with needle nose vise grips and it's been fine ever since.
Those lights are LED right? If it's filament, then yah, do yourself a favor and get two of them, nice to have spares on hand so you are not stuck waiting weeks for it to arrive if its back ordered like I am now for other parts.
Aaron