I just installed a Maretron Weather
sensor WS 100-01 on a HR42. I mounted the unit at the top of the mast. Pluged an in-line terminator into the male connector on the unit. Nexted I plugged the cable into the other end of the in-line terminator. ( THe cable I used had a female on one end and open leads on the other) I ran the cable down the mast to a terminal block inside the boat out of the weather
this way when I stepped the mast I just disconnected the cable at the terminal block. Next I ran a cable from the terminal block over to the NMEA 2000
backbone. If you already have the NMEA 2000
backbone settup you will have a terminator at each end of the back bone. You will need to remove one of the terminators and plug
the cable that you ran from the base of the mast into that "T" plug
. You will need a field insatllable NMEA2000 plug of the correct sex. The weater station will sit at the end of the NMEA2000 back bone when you finish. The system worked fine with the Furuno NavNet3.
Hope this helps