If you ground the brown wire and the system does not go, it is probably due to system pressure is sety too high. The system is set to 100psi from the factory. This is done by calibrating the 806-162 pressure switch.
If the system pressure is too high, it will stop the HSV from opening. There is a small washer inside the HSV, please remove it carefully and keep it somewhere safe. Reassemble HSV.... See picture.
