I've bought the LEDs because my existing daytime running lights was kind of dark. So hastily ordered the LEDs and built. The installation was no problem at all, went within 10 minutes (for both sides). The light is already gigantic. Radiantly bright white and perfect visibility. In addition, you have these LEDs do not use resistors, there is no error message. For other lamps Extra resistors are provided, which can then have to connect and store somewhere. That is no longer necessary in these lamps to happiness. Really highly recommended.