I have an Airmar B744V Triducer designed for Raymarine's A- and E-series displays and would like to connect it into an ST40/60+/70 (or anything else for that matter) instrument system. Trouble is, the speed sensor is 2-wire and most instruments and interfaces on the market today will accept 3-wire speed inputs only.
Anyone know a way to interface this transducer into an instrument system?? N2K, 0183, Raymarine, Garmin, Furuno.. not fussed - I just want it to work.
Thanks!