vacum bottle setup

I have searched the threads and cannot find what is needed. I have a 86 2.5L wagoneer with the disco front. I setup the bottle and ran the vac lines to the cruise control and such but on the fire wall i have 4 nipples that go inside to the heater and a/c controls are there two seperate lines that control each function.And to which ones of the four do they go to. Any diagrams would help a lot. The one on the firewall is for emmisions only. Thanks guys John