I'm repairing mums daewoo leganza atm but i took it apart last year and now after the bad weathers cleared i went back to trying to repair it.

I took the throttle body off and now I'm confused as to where all the pipes go... I've sussed the coolant ones out and another goes to a thing on the injectors, still I have 3 pipes remaining - I believe one goes to the rocker cover and I've connected another up to a little black box thing which I have no idea what it is but looks as if the pipe should go on it, finally I have a long pipe which is leading no where what could this go on or be?

Cheers in advance