This is for a Bosch 2 stage heat pump application. The thermostat below shows the current wiring. Assuming 2 cooling states, 2 heat stages, and auxiliary heat how would these wire translate? In particular the white W3 wire. I think the others are pretty self explanatory. Ignore the H, DH, and EX contacts since they were never used. If the H line could be used that would be a plus, but it isn't necessary.