I've had mine 3+ years. Never leaked or fogged up, they work great and Im puzzled by your blinker light problem. You either got a defective set or bought an inferior brand that someone passed off as the good ones. You say the blinker is hard to see at night. Here's a pic I just took, 10am, sunny day with the garage door open right behind the camera/car. They're really much brighter in the dark. 🤷
