We need two pcs as we are going to have a bi-reference system for certain applications, where one reference will be needed for some of the 33 pcs and the other will be needed for the rest. The reason why we need the connector cable which you will be supplying for us is that other functions we will only need one and so we will short them together this way. Please note that these two wires will not be shorted like the rest and will not even be shorted together internally.