I removed the engine somewhat months ago and fired a new one in at the weekend but im left with a few pipes, sensors etc that im not sure about if anyone has any help it would be greatly appreciated 1) Firstly this is on the front of the block and i cant see anything that plugs into it, What is it and does it need to be connected? 2) The two blue prongs? Dont have a clue what they are? they are just under dizzy. 3) The grey triangular electrical connector? what is it and does it need to be connected? 4) Not sure what this is but it has two vaccum hoses connected