Premium quality aftermarket headlight decoder for LED upgrades Compatible with all aftermarket LED kits for H4 headlights Warning error decoder, pusher condenser and anti-flicker for LED low/high beam headlights and fog lights Solves OBC warning error codes, bulb removal, flickering output, prevents flickering or burning bulbs, and helps prevent error messages and canbus errors on vehicles Use scenarios - Upgrading H4 headlights on a passenger car with an aftermarket LED kit to ensure stable output and avoid CAN bus related errors or warning messages - Installing LED fog lights or low/high beam LEDs that tend to flicker, to achieve smooth operation and reliable brightness without flicker - Fleet maintenance across multiple vehicles with LED upgrades, standardizing performance and reducing diagnostic warnings from CAN bus systems