I had the same problem but I'm using a set of DDM tuning hid and it was flickering from the right side, I fixed the problem by adding a extra ground wire to the ballast because the relay harness seems pretty cheap to me.Okay, so I got my kit from Diode Dynamics and the relay harness. When the car is started and running the lights flicker. Any idea what is causing this? All connections are good and I grounded directly to the battery.
The flickering issue could also because of a bad ballast.
Is you flickering only on one side or both?