connecting the fuel injectors along the driver side there is one wire has a plug end to it and fits on a a small metal piece sticking out of the lower intake. So the first question is what is that? and number two that is a red wire going to that so I assume it is power to it or something, and there is another one that is identical that I've noticed dangling infrong of the engine but is a black wire with a plug on it any idea what I'm lookin at or where the black one connects to?