I am interested in upgrading the wiring that came with my e-80
chartplotter, S1G autopilot, wind machine, and speed/depth instrument.
What are good reference matierals to read, to plan this out? I want
to accomplish:

- wind instrument receives boat speed (this works today)
- current position feed to my ICOM VHF, via NMEA (this works today)
- autopilot recieves wind direction and speed
- autopilot recieves way point information from charplotter
- chartplotter receives data from all instruments