1. Pack of 2 LED Headlight Decoder, Size 9004/9007, Plug and play installation. 2. The anti-flickering decoders will fix most power fluctuation issues such as flickering. flashing, radio interference, LED light turning off when engine starts, etc. 3. NOTE: This LED decoder may not work for all vehicles. Not fit for BMW 3 Series/5 Series, Mercedes-Benz GLA/S Series vehicles.

http://olla.gr/2-pcs-9004-9007-led-headlight-anti-flicker-resistor-canceller-decoders/