couple of bits on a 328

i have recently put a p reg 1996 engine in my 1994 l reg e36. i am now stuck on a couple of issues.
1. im not too sure how the heating is all connected up under the bonnet. if anyone knows anything bout that would be helpful.
2. there is a little breather pipe just behind the throttle bbottle on the bottom of the inlet manifold and i dont kno where it goes to.
3. i cant seem to connect up my throttle cable from the old throttle body on to the new one.
i would really appreiciate someones help if they could.
1. im not too sure how the heating is all connected up under the bonnet. if anyone knows anything bout that would be helpful.
2. there is a little breather pipe just behind the throttle bbottle on the bottom of the inlet manifold and i dont kno where it goes to.
3. i cant seem to connect up my throttle cable from the old throttle body on to the new one.
i would really appreiciate someones help if they could.