heater cables...which ones go where?

[imholte]

I just bought a new heater control unit and am trying to put the cables back on to the levels in the right places? Anyone know which ones go to the heat, fan, and defrost levers?

I have one leading to the firewall on the passenger side,
another is going into the bottom of the heaterbox,
the last one is going to the upper side of the heater box?

Any help appreciated.
Thanks all