NEED HELP what are these lines

[RB33]

i got a 89 240sx with dohc swap got it in parts an i need to find out what these lines are in this circle

http://i1329.photobucket.com/albums/w555/nate_2342/image_zps8d44a42e.jpeg (http://s1329.photobucket.com/user/nate_2342/media/image_zps8d44a42e.jpeg.html)

[driftminds13]

the one facing towards the front of the car goes connected to your intake that's the iacv and the other one is a coolant line

[RB33]

and the little black one

[brndck]

the small black one appears to be the pcv.

[RB33]

yea i just found out that is the pcv but now where does that coolant line go