TROUBLESHOOTING GUIDE HEADLIGHT FLICKING 1. Moving Bulb / Bi-Xenon Flicking Up and Down Known vehicle types: Dodge Ram, Ford F150, Jeep Wrangler A factory circuitry issue in these vehicles result in an unsteady pulse, causing the bulb to move uncontrollably. See Problematic Vehicle Guide. 2. Flicking Bulb Some vehicles may require a relay harness to stabilize the power current. Please contact your Alumina dealer for details.