Do you know that most of DRL LED sold are not waterproof at all? Eventhough they said it is waterproof, you will find out water still can penetrate to the inside of the DRL and damaging the LED in a few weeks or months.
This is due to high pressure wind forcing the water to go inside the DRL. How to make it waterproof? You can install a transparent sticker like the picture shown here and wrap the LED DRL. At least, it will last longer.
DIY INSTALL WATERPROOF LED DRL DAYTIME RUNNING LIGHT
Or, you can get a sealant in black or clear color and seal all the gap around the LED DRL. Only then you can start to install and do all the wiring for LED DRL on your car.
Good luck and happy diy!