[TG] [TG11] ACU 400 integration to legacy

[MBileckyj]

Hi

Looking at the Networking support site I can see how to connect Seatalk1 to Seatalk ng, however no mention of what kit is needed to connect NMEA0183 to ng, all my instruments are daisy chained Autohelm ST50's, do I need the Seatalk 1 - Ng spur and cut off the Seatalk1 block and fit spade connectors.
Secondly does the network need a power supply or is this taken from the ACU400?

Lastly I am supplying nmea0183 data (wind/depth/boat speed) )to a Furuno chart plotter and similarly receiving COG /SOG and position data from this via an E85001 interface unit. Would I retain this although this is connected to a Type 300.
Very confusing
Regards
Myron