I just bought this product and installed it according to the manual, so far I am pleased with it, the delay is completely gone. But my question is, what's the blue wire that sticking out of the middle box for? And there's a extra red wire that comes inside the box. The instructions are clear and there's nothing there that includes the blue wire and the extra red wire. My only consern is the unit takes time to shut off, and I feel like the red wire should be connected to the blue wire as a ground. Any suggestion?