Review on Premium LASFIT 3157 LED Bulb with Switchback Dual Color, Anti Hyper Flash, and Built-in Load Resistor for 3057/4157 Socket - Amber Turn Signal, White Daytime Running/Parking Light (Pack of 2) by Arturo Reyes

There were few reviews at the time of purchase, both positive. Decided to take a risk without getting too carried away with the idea of using built-in resistors. After installation, I noticed that the daytime running lights on the driver's side are not working. The turn signals worked and so did the brakes. Are they checked before leaving the factory? After touching the aluminum heatsink with a light a few times, the DRL worked, but I can't believe the road vibrations won't render it inoperable again. Here's the kicker, I bought this particular model because it claims to fix the hyper flashing issues associated with installing LED turn signals in standard sockets. The LEDs are bright enough. It initially works for the first few minutes after starting my car and then goes into a hyper flash every time I use my turn signals, along with error messages on my instrument cluster that the turn signals need to be replaced. I really wanted this to work as it says the main feature is no hyper-flashing/bugs. Based on my experience, I cannot recommend this product.