Overall pleased with my purchase; really like the dual colour feature and excellent brightness. I had some issues with my daytime running lights flickering which could not be solved with the available decoder module. My application is a bit usual though: 1994 F150 wiring (and engine) in a 1978 Bronco with H4 conversion headlight housings. The 1994 F150 DRLs use a reduced voltage when the engine is on and lights are "turned off", which caused the LEDs to flicker until headlights are set fully "on"; high beams worked fine. Adding the decoder module made the lights between white and yellow when moving between "off" and "on", and bitg modes flickered. I ended up bypassing the factory DRL module with a custom jumper and removed the decoders which solved my issues. The LED bulbs were bulkier behind the housing than the halogens they replaced, and I had to bend the wire retainer clips a bit to get the lights to seat properly. Also I had an issue after about a month of use where one of the light bodies separated from its mounting flange - once I discovered what had happened it was easy to reassemble, and I've had no issues since. If that happens again I will glue the flange in place when re-fastening it. Huge improvement in visibility in all weather conditions, would recommend!