I just got my new 31PC. I had the factory install the mercury smartcraft SC5000 monitor system. I also had a raymarine C80/GPS/4KW closed array installed by the dealer. As I was reading through the smartcraft manual there are several screens that mention calculations that can be done based on GPS input data. Does anyone know if you can connect the smartcraft to the C80 with a NEMA cable to provide it with GPS data? Any help would be appreciated as I am not sure my dealer is totally versed in the SC5000 system.