Need help w/ ac vac. lines

just got a 70 torino w/ fact ac, there are
three vac. lines that are cut off @ firewall
I can repair them no problem but have no idea
which line goes where... there is 2 vac ports
on hot water valve and 1 port on a
vac.switch that operates comp. clutch also
there is a vac. resevoir that appears to be
the supply. are they color coded?[img]/phpBB/images/smiles/icon_confused.gif[/img]!!!!!