I dont have a blinking light? I installed the predator ICE a few days ago. It just says that there is a light malfunction when you start the car up, then it goes away. I figure its cause the ICE is LED so the resistance is less than that of a incandescent bulb, so the computer thinks the bulb is blown.
I wouldnt unplug your battery overnight. Plan on making a trip to the dealer if you do that...