mmmm....I am not the greatest expert on this but I fitted one of the cable connectors shown on the link I sent you earlier last weekend and the arm on the heat flap must pull towards the front to open and allow heat in to the heater tube going to the front of the bus. The levers you need to connect to are on the outer sides of the housing (I.e closest to the wheel) on both sides, there is another lever on the end of the same rod which I think is for a spring (which I don't have) and I wonder if this is what you are getting confused with? It may be worth having a look at the pictures on VW Heritage of the heat exchangers to see if you have not lost any levers. Phew.....hope that makes some kind of sense!