Raymarine ST40 Interconnect Kit - seatalk

zz4gta · #1 (**permalink**) 12-27-2009

I want to hook up a st40 bidata display to a st40 wind instrument. The instructions say that I need an additional part E25028. Anyone just wire up a jumper yourself instead of paying $30 for one? Or is there more to it and I should just stop being cheap.

roline · #2 (**permalink**) 12-28-2009

It appears that the St40 series only has a single connect on it so you can not daisy chain like the St 60 series. If you are good with wiring, you could splice the cable wires together. I did that on adding ST50 to ST60 instruments. They have different connectors.

zz4gta · #3 (**permalink**) 12-28-2009

But I should be able to get True wind speed from the st40 right?
I guess I'm confused about where I'm splicing the cables. I understand that the Wind instr. needs a boat speed input to calc it, but I'm not sure which cable I'm splicing. Does the interconnect kit allow you to 'plug and play'?

roline · #4 (**permalink**) 01-10-2010

The raymarine cable is :
gnd black
12 volt power red
seatalk yellow
shield silver, bare wire

Information between instruments is shared on the seatalk connection.