I would like to use the Streetlight Function on my MPPT 100/30 and have it control the relay in the Global 520 is that possible? I am using the BMV-712, MPPT 100/30 and Global 520 all connected with the VE direct Cable. Is it possible for the street light function control the relay in the global 520? If not how can I control a relay and still be connected to the global 520 with the ve cable?